Tucson
Tap water in Tucson comes from 11 water systems: 9 low risk, 2 medium risk. Had a health violation recently, since fixed where the rating is medium risk.
11 official water systems are listed for this town. Each keeps its own rating.
Is it safe?
Adoc Tucson
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 4,500 people.
Source water: groundwater.
Last health violation began 2025-12-10.
The violations involved Groundwater Rule.
Is it safe?
Flowing Wells Irrigation 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 16,000 people.
Source water: groundwater.
Last health violation began 2024-10-17.
The violations involved LEAD AND COPPER RULE REVISIONS.
Is it safe?
Avra Water Coop Inc
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 6,685 people.
Source water: groundwater.
Is it safe?
Metropolitan Dwid
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 45,570 people.
Source water: groundwater.
Is it safe?
Metropolitan Dwid - Diablo Village
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 5,542 people.
Source water: groundwater.
Is it safe?
Metropolitan Dwid - Hub
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 4,252 people.
Source water: groundwater.
Is it safe?
Ray Water Company Inc
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 4,495 people.
Source water: groundwater.
Is it safe?
Spanish Trail Water Company
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.
Last health violation began 2019-07-01.
Is it safe?
Tucson City of
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 732,906 people.
Source water: groundwater.
Is it safe?
Tucson Water Corona De Tucson
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 10,217 people.
Source water: groundwater.
Is it safe?
Usaf Davis Monthan Afb
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 18,640 people.
Source water: groundwater.
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 Tucson, Arizona?
Tap water in Tucson comes from 11 water systems: 9 low risk, 2 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.