Houston
Tap water in Houston comes from 332 water systems: 321 low risk, 11 medium risk. Had a health violation recently, since fixed where the rating is medium risk.
332 official water systems are listed for this town. Each keeps its own rating.
Is it safe?
City of Houston
Medium risk
Had a health violation recently, since fixed
1 health-based violation began in the last 3 years. 0 are still unresolved.
Serves about 2,970,543 people.
Source water: surface water.
Last health violation began 2025-05-01.
The violations involved Interim Enhanced Surface Water Treatment Rule.
Is it safe?
Cypresswood Utility District
Medium risk
Had a health violation recently, since fixed
1 health-based violation began in the last 3 years. 0 are still unresolved.
Serves about 4,305 people.
Source water: surface water.
Last health violation began 2024-01-01.
The violations involved Arsenic.
Is it safe?
Harris County MUD 119
Medium risk
Had a health violation recently, since fixed
2 health-based violations began in the last 3 years. 0 are still unresolved.
Serves about 4,758 people.
Source water: groundwater.
Last health violation began 2026-04-01.
The violations involved Arsenic.
Is it safe?
Harris County MUD 196
Medium risk
Had a health violation recently, since fixed
1 health-based violation began in the last 3 years. 0 are still unresolved.
Serves about 7,026 people.
Source water: surface water.
Last health violation began 2024-10-17.
The violations involved LEAD AND COPPER RULE REVISIONS.
Is it safe?
Harris County MUD 46
Medium risk
Had a health violation recently, since fixed
1 health-based violation began in the last 3 years. 0 are still unresolved.
Serves about 5,418 people.
Source water: groundwater.
Last health violation began 2024-10-17.
The violations involved LEAD AND COPPER RULE REVISIONS.
Is it safe?
Kleinwood MUD
Medium risk
Had a health violation recently, since fixed
1 health-based violation began in the last 3 years. 0 are still unresolved.
Serves about 4,872 people.
Source water: surface water.
Last health violation began 2024-01-01.
The violations involved Arsenic.
Is it safe?
Mayde Creek MUD
Medium risk
Had a health violation recently, since fixed
1 health-based violation began in the last 3 years. 0 are still unresolved.
Serves about 5,301 people.
Source water: surface water.
Last health violation began 2024-10-17.
The violations involved LEAD AND COPPER RULE REVISIONS.
Is it safe?
Renn Road MUD
Medium risk
Had a health violation recently, since fixed
1 health-based violation began in the last 3 years. 0 are still unresolved.
Serves about 4,464 people.
Source water: groundwater.
Last health violation began 2024-10-01.
The violations involved Di(2-ethylhexyl) phthalate.
Is it safe?
Rice University
Medium risk
Had a health violation recently, since fixed
4 health-based violations began in the last 3 years. 0 are still unresolved.
Serves about 8,415 people.
Source water: surface water.
Last health violation began 2026-04-01.
The violations involved Lead and Copper Rule, LEAD AND COPPER RULE REVISIONS, Revised Total Coliform Rule.
Is it safe?
Trail of the Lakes MUD
Medium risk
Had a health violation recently, since fixed
6 health-based violations began in the last 3 years. 0 are still unresolved.
Serves about 9,480 people.
Source water: groundwater.
Last health violation began 2024-04-01.
The violations involved Gross Alpha, Excl. Radon and U, Combined Radium (-226 and -228).
Is it safe?
West Harris County MUD 10
Medium risk
Had a health violation recently, since fixed
1 health-based violation began in the last 3 years. 0 are still unresolved.
Serves about 6,697 people.
Source water: groundwater.
Last health violation began 2024-04-01.
The violations involved TTHM.
Is it safe?
Addicks Utility District
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 8,076 people.
Source water: surface water.
Is it safe?
Barker Cypress MUD
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 8,976 people.
Source water: surface water.
Is it safe?
Big Oaks MUD
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 6,450 people.
Source water: surface water.
Is it safe?
Bilma PUD
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 5,397 people.
Source water: surface water.
Last health violation began 2019-01-01.
Is it safe?
Bissonnet MUD
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 8,160 people.
Source water: groundwater.
Is it safe?
Blue Ridge West MUD
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 7,545 people.
Source water: groundwater.
Last health violation began 2021-10-01.
Is it safe?
Brazoria - Fort Bend Counties MUD 3
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 4,149 people.
Source water: groundwater.
Is it safe?
Brazoria County MUD 2
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 3,567 people.
Source water: groundwater.
Is it safe?
Brazoria County MUD 21
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 4,833 people.
Source water: groundwater.
Is it safe?
Brazoria County MUD 22
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 5,310 people.
Source water: groundwater.
Is it safe?
Brazoria County MUD 25
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 5,250 people.
Source water: groundwater.
Is it safe?
Brazoria County MUD 29
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 5,898 people.
Source water: groundwater.
Is it safe?
Brazoria County MUD 3
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 4,230 people.
Source water: groundwater.
Is it safe?
Brazoria County MUD 55
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 5,229 people.
Source water: groundwater.
Is it safe?
Brazoria County MUD 6
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 6,926 people.
Source water: groundwater.
Is it safe?
Bridgestone MUD
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 24,528 people.
Source water: surface water.
Is it safe?
Champions MUD
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 4,098 people.
Source water: groundwater.
Is it safe?
Charterwood MUD
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 5,832 people.
Source water: groundwater.
Is it safe?
Chelford City MUD
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 8,917 people.
Source water: groundwater.
Is it safe?
Chelford One MUD
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 4,557 people.
Source water: groundwater.
Is it safe?
Chimney Hill MUD
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 5,409 people.
Source water: surface water.
Is it safe?
Cimarron MUD
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 19,338 people.
Source water: groundwater.
Is it safe?
Cinco MUD 14
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 6,192 people.
Source water: groundwater.
Is it safe?
Cinco MUD 2
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 4,743 people.
Source water: groundwater.
Is it safe?
Cinco MUD 7
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 4,239 people.
Source water: groundwater.
Is it safe?
Cinco MUD 8
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 5,613 people.
Source water: groundwater.
Is it safe?
Cinco MUD 9
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 3,828 people.
Source water: groundwater.
Is it safe?
Cinco Southwest MUD 2
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 5,496 people.
Source water: surface water.
Is it safe?
Cinco Southwest MUD 3 Daycare
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 5,187 people.
Source water: surface water.
Is it safe?
Cinco Southwest MUD 4
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 6,093 people.
Source water: surface water.
Is it safe?
City of Houston District 73
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 6,105 people.
Source water: groundwater.
Is it safe?
City of Houston UD 5 - Kingwood
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 80,073 people.
Source water: groundwater.
Is it safe?
City of Houston Willow Chase
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 14,169 people.
Source water: groundwater.
Is it safe?
City of Spring Valley Village
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 4,229 people.
Source water: groundwater.
Is it safe?
Clay Road MUD
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 4,443 people.
Source water: surface water.
Is it safe?
Clear Brook City MUD
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 18,246 people.
Source water: surface water.
Is it safe?
Clear Lake City Water Authority
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 89,702 people.
Source water: surface water.
Is it safe?
Cnp Utility District
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 14,718 people.
Source water: surface water.
Is it safe?
Cornerstones MUD
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 5,331 people.
Source water: groundwater.
Is it safe?
Cy Champ PUD
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 7,428 people.
Source water: groundwater.
Is it safe?
Cypress Forest PUD
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 3,912 people.
Source water: groundwater.
Is it safe?
Cypress Hill MUD 1
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 11,052 people.
Source water: groundwater.
Is it safe?
Cypress Klein Utility District Wimbleton
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 3,960 people.
Source water: groundwater.
Is it safe?
East Montgomery County MUD 6
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 3,987 people.
Source water: groundwater.
Is it safe?
East Montgomery County MUD 7
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 4,017 people.
Source water: groundwater.
Is it safe?
El Dorado Utility District
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 3,591 people.
Source water: groundwater.
Is it safe?
Emerald Forest Utility District
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 7,326 people.
Source water: groundwater.
Is it safe?
Encanto Real Utility District
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 3,717 people.
Source water: groundwater.
Is it safe?
Fallbrook Utility District
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 6,720 people.
Source water: groundwater.
Is it safe?
First Colony MUD 9
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 7,818 people.
Source water: groundwater.
Is it safe?
Fort Bend County FWSD 1
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 6,030 people.
Source water: groundwater.
Is it safe?
Fort Bend County MUD 116 Canyon Gate
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 4,833 people.
Source water: groundwater.
Is it safe?
Fort Bend County MUD 118
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 5,346 people.
Source water: surface water.
Is it safe?
Fort Bend County MUD 119
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 5,088 people.
Source water: surface water.
Is it safe?
Fort Bend County MUD 121
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 3,477 people.
Source water: groundwater.
Is it safe?
Fort Bend County MUD 122
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 3,366 people.
Source water: surface water.
Is it safe?
Fort Bend County MUD 123
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 4,143 people.
Source water: surface water.
Is it safe?
Fort Bend County MUD 133
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 7,362 people.
Source water: surface water.
Is it safe?
Fort Bend County MUD 134b
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 7,356 people.
Source water: groundwater.
Is it safe?
Fort Bend County MUD 134c
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 7,260 people.
Source water: groundwater.
Is it safe?
Fort Bend County MUD 134d
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 5,796 people.
Source water: groundwater.
Is it safe?
Fort Bend County MUD 142
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 11,595 people.
Source water: surface water.
Is it safe?
Fort Bend County MUD 143 Water View Esta
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 7,245 people.
Source water: groundwater.
Is it safe?
Fort Bend County MUD 146
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 5,985 people.
Source water: surface water.
Is it safe?
Fort Bend County MUD 151
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 10,233 people.
Source water: groundwater.
Is it safe?
Fort Bend County MUD 152
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 4,575 people.
Source water: surface water.
Is it safe?
Fort Bend County MUD 155
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 5,292 people.
Source water: surface water.
Is it safe?
Fort Bend County MUD 162
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 5,553 people.
Source water: groundwater.
Is it safe?
Fort Bend County MUD 165
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 4,314 people.
Source water: surface water.
Is it safe?
Fort Bend County MUD 182
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 10,498 people.
Source water: groundwater.
Is it safe?
Fort Bend County MUD 185
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 3,663 people.
Source water: groundwater.
Is it safe?
Fort Bend County MUD 190
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 5,049 people.
Source water: surface water.
Is it safe?
Fort Bend County MUD 194
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 5,211 people.
Source water: groundwater.
Is it safe?
Fort Bend County MUD 2
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 6,819 people.
Source water: surface water.
Is it safe?
Fort Bend County MUD 222
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 3,582 people.
Source water: groundwater.
Is it safe?
Fort Bend County MUD 229
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 3,666 people.
Source water: groundwater.
Is it safe?
Fort Bend County MUD 23
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 13,695 people.
Source water: groundwater.
Is it safe?
Fort Bend County MUD 26 Quail Green West
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 5,424 people.
Source water: groundwater.
Is it safe?
Fort Bend County MUD 30
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 16,794 people.
Source water: surface water.
Is it safe?
Fort Bend County MUD 34
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 5,367 people.
Source water: surface water.
Is it safe?
Fort Bend County MUD 35
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 6,297 people.
Source water: groundwater.
Is it safe?
Fort Bend County MUD 41
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 4,179 people.
Source water: surface water.
Is it safe?
Fort Bend County MUD 42 Wat Plat
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 4,395 people.
Source water: groundwater.
Is it safe?
Fort Bend County MUD 48
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 3,969 people.
Source water: groundwater.
Is it safe?
Fort Bend County MUD 50
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 6,234 people.
Source water: surface water.
Is it safe?
Fort Bend County MUD 57
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 5,335 people.
Source water: surface water.
Is it safe?
Fort Bend County MUD 58
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 10,629 people.
Source water: surface water.
Is it safe?
Fort Bend County MUD 81 Weston Lakes
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 4,107 people.
Source water: groundwater.
Is it safe?
Fountainhead MUD
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 4,614 people.
Source water: surface water.
Is it safe?
Fry Road MUD
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 3,711 people.
Source water: groundwater.
Is it safe?
Fulshear MUD 3a
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 5,421 people.
Source water: groundwater.
Is it safe?
Galveston County WCID 12
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 8,721 people.
Source water: surface water.
Is it safe?
Grand Lakes MUD 4
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 3,867 people.
Source water: surface water.
Is it safe?
Grand Mission MUD 1
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 6,663 people.
Source water: surface water.
Is it safe?
Grand Mission MUD 2
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 6,285 people.
Source water: groundwater.
Is it safe?
Grant Road PUD
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 3,393 people.
Source water: surface water.
Is it safe?
Greenwood Utility District
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 10,527 people.
Source water: surface water.
Is it safe?
Harris County FWSD 51
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 19,671 people.
Source water: surface water.
Is it safe?
Harris County FWSD 61
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 15,400 people.
Source water: groundwater.
Is it safe?
Harris County Improvement District 18
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 5,025 people.
Source water: groundwater.
Is it safe?
Harris County MUD 1
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 12,342 people.
Source water: groundwater.
Is it safe?
Harris County MUD 102
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 10,401 people.
Source water: surface water.
Is it safe?
Harris County MUD 104
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 4,854 people.
Source water: surface water.
Is it safe?
Harris County MUD 105
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 14,925 people.
Source water: surface water.
Is it safe?
Harris County MUD 106
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 4,668 people.
Source water: groundwater.
Is it safe?
Harris County MUD 109
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 9,501 people.
Source water: groundwater.
Is it safe?
Harris County MUD 11
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 3,645 people.
Source water: groundwater.
Is it safe?
Harris County MUD 118
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 6,678 people.
Source water: groundwater.
Is it safe?
Harris County MUD 120
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 13,197 people.
Source water: groundwater.
Is it safe?
Harris County MUD 127
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 5,247 people.
Source water: surface water.
Is it safe?
Harris County MUD 130
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 4,572 people.
Source water: surface water.
Is it safe?
Harris County MUD 132
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 8,682 people.
Source water: groundwater.
Is it safe?
Harris County MUD 148 Kingslake
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 5,448 people.
Source water: surface water.
Is it safe?
Harris County MUD 149
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 3,543 people.
Source water: groundwater.
Is it safe?
Harris County MUD 150
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 6,786 people.
Source water: surface water.
Is it safe?
Harris County MUD 151
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 7,464 people.
Source water: groundwater.
Is it safe?
Harris County MUD 152
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 7,314 people.
Source water: groundwater.
Is it safe?
Harris County MUD 153
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 11,781 people.
Source water: groundwater.
Is it safe?
Harris County MUD 154
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 8,289 people.
Source water: groundwater.
Is it safe?
Harris County MUD 157
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 13,062 people.
Source water: surface water.
Is it safe?
Harris County MUD 158
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 6,798 people.
Source water: groundwater.
Is it safe?
Harris County MUD 16
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 5,982 people.
Source water: surface water.
Is it safe?
Harris County MUD 163
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 5,487 people.
Source water: surface water.
Is it safe?
Harris County MUD 165
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 40,503 people.
Source water: surface water.
Is it safe?
Harris County MUD 166
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 4,239 people.
Source water: surface water.
Is it safe?
Harris County MUD 167
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 16,761 people.
Source water: groundwater.
Is it safe?
Harris County MUD 172
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 4,404 people.
Source water: surface water.
Is it safe?
Harris County MUD 173
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 3,894 people.
Source water: surface water.
Is it safe?
Harris County MUD 179
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 5,115 people.
Source water: surface water.
Is it safe?
Harris County MUD 18 Heatherwood Hunters
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 4,083 people.
Source water: surface water.
Is it safe?
Harris County MUD 180
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 5,892 people.
Source water: groundwater.
Is it safe?
Harris County MUD 183
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 3,981 people.
Source water: surface water.
Is it safe?
Harris County MUD 185
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 4,617 people.
Source water: surface water.
Is it safe?
Harris County MUD 186
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 4,005 people.
Source water: surface water.
Is it safe?
Harris County MUD 188
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 9,453 people.
Source water: surface water.
Is it safe?
Harris County MUD 189
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 6,906 people.
Source water: groundwater.
Is it safe?
Harris County MUD 200 Cranbrook
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 14,868 people.
Source water: surface water.
Is it safe?
Harris County MUD 208
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 3,642 people.
Source water: surface water.
Is it safe?
Harris County MUD 216
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 3,627 people.
Source water: groundwater.
Is it safe?
Harris County MUD 221
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 4,839 people.
Source water: groundwater.
Is it safe?
Harris County MUD 222
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 6,129 people.
Source water: groundwater.
Is it safe?
Harris County MUD 230
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 10,404 people.
Source water: surface water.
Is it safe?
Harris County MUD 239
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 5,583 people.
Source water: groundwater.
Is it safe?
Harris County MUD 24
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 14,796 people.
Source water: surface water.
Last health violation began 2022-08-01.
Is it safe?
Harris County MUD 249
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 3,420 people.
Source water: groundwater.
Is it safe?
Harris County MUD 257
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 3,501 people.
Source water: surface water.
Is it safe?
Harris County MUD 26
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 17,178 people.
Source water: groundwater.
Is it safe?
Harris County MUD 264
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 3,573 people.
Source water: surface water.
Is it safe?
Harris County MUD 276
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 5,094 people.
Source water: surface water.
Is it safe?
Harris County MUD 278
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 10,584 people.
Source water: surface water.
Is it safe?
Harris County MUD 281
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 3,573 people.
Source water: groundwater.
Is it safe?
Harris County MUD 284
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 4,506 people.
Source water: groundwater.
Is it safe?
Harris County MUD 285
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 14,268 people.
Source water: surface water.
Is it safe?
Harris County MUD 287
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 6,864 people.
Source water: groundwater.
Is it safe?
Harris County MUD 290
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 8,259 people.
Source water: groundwater.
Is it safe?
Harris County MUD 319
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 5,751 people.
Source water: groundwater.
Is it safe?
Harris County MUD 322
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 4,266 people.
Source water: groundwater.
Is it safe?
Harris County MUD 33
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 5,181 people.
Source water: groundwater.
Is it safe?
Harris County MUD 342
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 4,035 people.
Source water: groundwater.
Is it safe?
Harris County MUD 344
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 4,518 people.
Source water: surface water.
Is it safe?
Harris County MUD 345
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 3,855 people.
Source water: groundwater.
Is it safe?
Harris County MUD 354
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 6,588 people.
Source water: groundwater.
Is it safe?
Harris County MUD 360
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 4,707 people.
Source water: groundwater.
Is it safe?
Harris County MUD 364
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 6,168 people.
Source water: groundwater.
Is it safe?
Harris County MUD 365
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 4,461 people.
Source water: groundwater.
Is it safe?
Harris County MUD 367
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 6,759 people.
Source water: surface water.
Is it safe?
Harris County MUD 368
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 11,853 people.
Source water: surface water.
Is it safe?
Harris County MUD 370
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 4,452 people.
Source water: surface water.
Is it safe?
Harris County MUD 374 Cypress Creek Lake
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 5,526 people.
Source water: groundwater.
Is it safe?
Harris County MUD 383
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 4,881 people.
Source water: surface water.
Is it safe?
Harris County MUD 391
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 8,835 people.
Source water: groundwater.
Is it safe?
Harris County MUD 397
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 4,413 people.
Source water: groundwater.
Is it safe?
Harris County MUD 400 - West
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 5,217 people.
Source water: surface water.
Is it safe?
Harris County MUD 400 East
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 6,066 people.
Source water: surface water.
Is it safe?
Harris County MUD 401
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 3,750 people.
Source water: groundwater.
Is it safe?
Harris County MUD 412
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 3,480 people.
Source water: surface water.
Is it safe?
Harris County MUD 419
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 7,389 people.
Source water: groundwater.
Is it safe?
Harris County MUD 423
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 4,044 people.
Source water: surface water.
Is it safe?
Harris County MUD 432
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 4,782 people.
Source water: groundwater.
Is it safe?
Harris County MUD 433
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 6,651 people.
Source water: surface water.
Is it safe?
Harris County MUD 434
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 3,690 people.
Source water: groundwater.
Is it safe?
Harris County MUD 449
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 7,179 people.
Source water: groundwater.
Is it safe?
Harris County MUD 457
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 5,967 people.
Source water: groundwater.
Is it safe?
Harris County MUD 468
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 7,944 people.
Source water: surface water.
Is it safe?
Harris County MUD 489
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 10,476 people.
Source water: groundwater.
Is it safe?
Harris County MUD 49
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 10,893 people.
Source water: surface water.
Is it safe?
Harris County MUD 495
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 9,882 people.
Source water: groundwater.
Is it safe?
Harris County MUD 5
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 5,487 people.
Source water: surface water.
Is it safe?
Harris County MUD 501
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 4,740 people.
Source water: surface water.
Is it safe?
Harris County MUD 502
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 5,487 people.
Source water: surface water.
Is it safe?
Harris County MUD 504
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 7,242 people.
Source water: surface water.
Is it safe?
Harris County MUD 53
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 17,856 people.
Source water: surface water.
Is it safe?
Harris County MUD 534
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 3,822 people.
Source water: groundwater.
Is it safe?
Harris County MUD 536
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 8,070 people.
Source water: groundwater.
Is it safe?
Harris County MUD 55 Heritage Park
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 16,392 people.
Source water: surface water.
Is it safe?
Harris County MUD 558
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 3,300 people.
Source water: groundwater.
Is it safe?
Harris County MUD 6 Carriage Lane
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 3,936 people.
Source water: surface water.
Is it safe?
Harris County MUD 62
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 3,519 people.
Source water: groundwater.
Is it safe?
Harris County MUD 64
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 6,726 people.
Source water: groundwater.
Is it safe?
Harris County MUD 65
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 6,330 people.
Source water: groundwater.
Is it safe?
Harris County MUD 69
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 4,422 people.
Source water: groundwater.
Is it safe?
Harris County MUD 70
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 5,763 people.
Source water: surface water.
Is it safe?
Harris County MUD 71
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 17,079 people.
Source water: groundwater.
Is it safe?
Harris County MUD 81
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 11,475 people.
Source water: groundwater.
Is it safe?
Harris County MUD 82
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 18,990 people.
Source water: groundwater.
Is it safe?
Harris County MUD 86
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 5,397 people.
Source water: surface water.
Is it safe?
Harris County MUD 96
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 6,993 people.
Source water: surface water.
Is it safe?
Harris County UD 15
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 3,489 people.
Source water: groundwater.
Is it safe?
Harris County UD 16
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 6,069 people.
Source water: groundwater.
Is it safe?
Harris County UD 6
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 11,262 people.
Source water: surface water.
Is it safe?
Harris County WCID 109
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 10,134 people.
Source water: surface water.
Is it safe?
Harris County WCID 110
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 9,807 people.
Source water: groundwater.
Is it safe?
Harris County WCID 114
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 5,160 people.
Source water: surface water.
Last health violation began 2023-07-01.
Is it safe?
Harris County WCID 116
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 3,651 people.
Source water: groundwater.
Is it safe?
Harris County WCID 119
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 9,150 people.
Source water: surface water.
Is it safe?
Harris County WCID 132
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 3,501 people.
Source water: surface water.
Is it safe?
Harris County WCID 133
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 5,082 people.
Source water: groundwater.
Is it safe?
Harris County WCID 36
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 11,073 people.
Source water: surface water.
Is it safe?
Harris County WCID 74
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 5,886 people.
Source water: groundwater.
Is it safe?
Harris County WCID 84
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 6,552 people.
Source water: surface water.
Is it safe?
Harris County WCID 89
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 9,033 people.
Source water: surface water.
Is it safe?
Harris County WCID 92
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 4,752 people.
Source water: groundwater.
Is it safe?
Harris County WCID 96
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 10,530 people.
Source water: groundwater.
Is it safe?
Harris Fort Bend Counties MUD 1
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 3,812 people.
Source water: groundwater.
Is it safe?
Harris Fort Bend Counties MUD 5
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 4,641 people.
Source water: groundwater.
Is it safe?
Harris Montgomery Counties MUD 386
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 18,018 people.
Source water: groundwater.
Is it safe?
Harris-fort Bend Counties MUD 3
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 9,297 people.
Source water: groundwater.
Is it safe?
Harris-waller Counties MUD 5
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 4,098 people.
Source water: groundwater.
Is it safe?
Heatherloch MUD
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 6,612 people.
Source water: surface water.
Is it safe?
Horsepen Bayou MUD
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 6,597 people.
Source water: surface water.
Is it safe?
Hunters Glen MUD
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 9,405 people.
Source water: groundwater.
Is it safe?
Interstate MUD
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 6,591 people.
Source water: groundwater.
Is it safe?
Jackrabbit Road PUD
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 8,346 people.
Source water: surface water.
Is it safe?
Kaufman County FWSD 1c
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 5,346 people.
Source water: surface water.
Is it safe?
Kings Manor MUD
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 4,377 people.
Source water: groundwater.
Is it safe?
Kingsbridge MUD
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 8,663 people.
Source water: surface water.
Is it safe?
Klein PUD
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 3,504 people.
Source water: groundwater.
Is it safe?
Lake Forest Utility District
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 6,201 people.
Source water: groundwater.
Is it safe?
Lake MUD
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 6,048 people.
Source water: surface water.
Is it safe?
Langham Creek Utility District
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 10,377 people.
Source water: surface water.
Is it safe?
Louetta North PUD
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 4,848 people.
Source water: surface water.
Is it safe?
Malcomson Road Utility District
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 7,231 people.
Source water: surface water.
Is it safe?
Meadowhill Regional MUD
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 13,863 people.
Source water: groundwater.
Is it safe?
Memorial Villages Water Authority
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 11,382 people.
Source water: surface water.
Is it safe?
Mills Road MUD
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 6,717 people.
Source water: surface water.
Is it safe?
Montgomery County MUD 112
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 5,292 people.
Source water: groundwater.
Is it safe?
Montgomery County MUD 115
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 4,599 people.
Source water: groundwater.
Is it safe?
Montgomery County MUD 119 Spring Trails
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 6,621 people.
Source water: groundwater.
Is it safe?
Montgomery County MUD 139
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 5,523 people.
Source water: groundwater.
Is it safe?
Montgomery County MUD 15
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 6,564 people.
Source water: groundwater.
Is it safe?
Montgomery County MUD 19
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 4,422 people.
Source water: groundwater.
Is it safe?
Montgomery County MUD 8
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 5,472 people.
Source water: groundwater.
Is it safe?
Montgomery County MUD 89
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 4,761 people.
Source water: groundwater.
Is it safe?
Montgomery County MUD 9
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 5,949 people.
Source water: groundwater.
Is it safe?
Montgomery County MUD 94
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 5,184 people.
Source water: groundwater.
Is it safe?
Montgomery County MUD 95
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 6,435 people.
Source water: surface water.
Is it safe?
Montgomery County MUD 99
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 3,675 people.
Source water: surface water.
Is it safe?
Montgomery County UD 2
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 3,381 people.
Source water: groundwater.
Is it safe?
Montgomery County UD 3
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 3,825 people.
Source water: groundwater.
Is it safe?
Mount Houston Road MUD
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 5,346 people.
Source water: groundwater.
Is it safe?
Newport MUD
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 13,191 people.
Source water: surface water.
Is it safe?
North Green MUD
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 4,941 people.
Source water: groundwater.
Is it safe?
North Mission Glen MUD
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 9,096 people.
Source water: surface water.
Is it safe?
North Park PUD
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 6,708 people.
Source water: groundwater.
Is it safe?
Northampton MUD
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 12,162 people.
Source water: groundwater.
Is it safe?
Northgate Crossing MUD 1
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 3,906 people.
Source water: groundwater.
Is it safe?
Northgate Crossing MUD 2
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 3,753 people.
Source water: groundwater.
Is it safe?
Northwest Freeway MUD
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 3,678 people.
Source water: groundwater.
Is it safe?
Northwest Harris County MUD 10
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 7,671 people.
Source water: groundwater.
Is it safe?
Northwest Harris County MUD 12
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 7,764 people.
Source water: groundwater.
Is it safe?
Northwest Harris County MUD 15
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 6,915 people.
Source water: groundwater.
Is it safe?
Northwest Harris County MUD 19
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 5,535 people.
Source water: groundwater.
Is it safe?
Northwest Harris County MUD 20
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 3,429 people.
Source water: groundwater.
Is it safe?
Northwest Harris County MUD 23
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 4,470 people.
Source water: groundwater.
Is it safe?
Northwest Harris County MUD 30
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 3,804 people.
Source water: surface water.
Is it safe?
Northwest Harris County MUD 32
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 5,016 people.
Source water: groundwater.
Is it safe?
Northwest Harris County MUD 36
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 3,648 people.
Source water: surface water.
Is it safe?
Northwest Harris County MUD 5
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 25,425 people.
Source water: surface water.
Is it safe?
Northwest Harris County MUD 9
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 8,886 people.
Source water: groundwater.
Is it safe?
Northwest Park MUD
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 18,168 people.
Source water: groundwater.
Is it safe?
Nottingham Country MUD
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 7,095 people.
Source water: groundwater.
Is it safe?
Parkway UD
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 7,323 people.
Source water: groundwater.
Is it safe?
Pine Village PUD
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 3,498 people.
Source water: surface water.
Is it safe?
Plantation MUD
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 4,260 people.
Source water: groundwater.
Is it safe?
Ponderosa Forest Utility District
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 10,101 people.
Source water: groundwater.
Is it safe?
Postwood MUD
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 3,747 people.
Source water: groundwater.
Is it safe?
Prestonwood Forest Utility District
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 5,940 people.
Source water: surface water.
Is it safe?
Rayford Road MUD
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 11,550 people.
Source water: surface water.
Is it safe?
Reid Road MUD 1
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 6,969 people.
Source water: groundwater.
Is it safe?
Remington MUD 1
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 13,746 people.
Source water: surface water.
Is it safe?
Ricewood MUD
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 4,908 people.
Source water: surface water.
Is it safe?
Rolling Creek Utility District
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 5,388 people.
Source water: surface water.
Is it safe?
Sagemeadow Utility District
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 6,975 people.
Source water: surface water.
Is it safe?
Sienna MUD 10
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 7,824 people.
Source water: groundwater.
Is it safe?
Sienna MUD 12
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 4,311 people.
Source water: groundwater.
Is it safe?
Sienna MUD 3
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 7,365 people.
Source water: groundwater.
Is it safe?
Sienna MUD 4
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 6,435 people.
Source water: groundwater.
Is it safe?
Sienna MUD 6
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 5,184 people.
Source water: surface water.
Is it safe?
Sienna Plantation Management District
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 4,179 people.
Source water: groundwater.
Is it safe?
Southern Montgomery County MUD
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 13,372 people.
Source water: surface water.
Is it safe?
Southern Water
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 3,933 people.
Source water: groundwater.
Is it safe?
Spencer Road PUD
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 5,607 people.
Source water: surface water.
Is it safe?
Spring Meadows MUD
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 4,224 people.
Source water: surface water.
Is it safe?
Sunbelt FWSD High Meadows Subdivision
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 8,946 people.
Source water: surface water.
Is it safe?
Sunbelt FWSD Oakwilde Subdivision
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 6,819 people.
Source water: surface water.
Is it safe?
Sunbelt FWSD Woodland Oaks Subdivision
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 4,578 people.
Source water: surface water.
Is it safe?
Tattor Road MUD
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 5,400 people.
Source water: groundwater.
Is it safe?
Timber Lane Utility District
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 24,507 people.
Source water: groundwater.
Is it safe?
Valley Ranch MUD 1
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 4,056 people.
Source water: groundwater.
Is it safe?
West Harris County MUD 11
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 8,205 people.
Source water: groundwater.
Is it safe?
West Harris County MUD 17
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 3,354 people.
Source water: groundwater.
Is it safe?
West Harris County MUD 2 Chase
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 6,921 people.
Source water: groundwater.
Is it safe?
West Harris County MUD 5
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 3,591 people.
Source water: groundwater.
Is it safe?
West Harris County MUD 6
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 3,435 people.
Source water: groundwater.
Is it safe?
West Harris County MUD 7
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 5,289 people.
Source water: groundwater.
Is it safe?
West Harris County MUD 9
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 5,961 people.
Source water: groundwater.
Last health violation began 2019-04-01.
Is it safe?
West Park MUD
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 8,106 people.
Source water: groundwater.
Is it safe?
Westador MUD
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 5,337 people.
Source water: surface water.
Is it safe?
Weston MUD
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 7,647 people.
Source water: groundwater.
Is it safe?
Willow Creek Farms MUD
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 3,453 people.
Source water: groundwater.
Is it safe?
Windfern Forest Utility District
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 7,170 people.
Source water: surface water.
Source
US EPA Safe Drinking Water Information System.
Period covered: October 2023 to September 2026.
Covers community water systems serving 3,300 people or more. The rating uses health-based violations of federal drinking-water standards in the last three years, and whether those violations have been fixed. Each system is placed at a town it serves, so positions are approximate.
Common questions
Can I drink the tap water in Houston, Texas?
Tap water in Houston comes from 332 water systems: 321 low risk, 11 medium risk. Had a health violation recently, since fixed where the rating is medium risk.
Where do these ratings come from?
US EPA Safe Drinking Water Information System. Period covered: October 2023 to September 2026.