Colorado

It depends on the town. 163 of 175 listed water systems in Colorado, United States are low risk (93.1%).

• 163Low
• 11Medium
• 1High
• 0Critical

• AlamosaLow risk
• ArvadaLow risk
• AspenLow risk
• AultLow risk
• Aurora2 systems · low risk
• BennettLow risk
• Berthoud2 systems · low risk
• Black HawkLow risk
• BoulderLow risk
• BreckenridgeLow risk
• Brighton2 systems · low risk
• BroomfieldLow risk
• BrushLow risk
• Buena VistaLow risk
• BurlingtonLow risk
• Carbondale2 systems · low risk
• Castle PinesLow risk
• Castle Rock2 systems · low risk
• Cañon City2 systems · low risk
• Centennial3 systems · low risk
• Central CityLow risk
• CliftonLow risk
• Colorado Springs7 systems · includes medium risk
• Commerce CityLow risk
• Copper Mountain Consolidated MdLow risk
• CortezLow risk
• CraigLow risk
• DaconoLow risk
• DeltaLow risk
• Denver6 systems · includes high risk
• DurangoLow risk
• EagleLow risk
• EatonLow risk
• EdgewaterLow risk
• ElizabethLow risk
• Englewood3 systems · low risk
• ErieLow risk
• Estes Park2 systems · low risk
• EvansLow risk
• EvergreenLow risk
• Federal HeightsLow risk
• FirestoneLow risk
• FlorenceMedium risk
• Fort CarsonLow risk
• Fort Collins4 systems · low risk
• Fort LuptonLow risk
• Fort Morgan2 systems · low risk
• FountainLow risk
• FrederickLow risk
• FriscoLow risk
• GeneseeLow risk
• GeorgetownLow risk
• GlendaleLow risk
• Glenwood SpringsLow risk
• Golden2 systems · low risk
• Grand County NoMedium risk
• Grand Junction2 systems · low risk
• Greeley2 systems · low risk
• Greenwood Village2 systems · low risk
• GunnisonLow risk
• GypsumLow risk
• HaydenLow risk
• Highlands RanchLow risk
• HudsonLow risk
• Idaho SpringsLow risk
• InvernessLow risk
• JohnstownLow risk
• KeenesburgLow risk
• Ken CarylLow risk
• KeystoneLow risk
• La JuntaLow risk
• LafayetteLow risk
• Lakewood6 systems · low risk
• LamarLow risk
• LeadvilleLow risk
• LimonLow risk
• Littleton5 systems · low risk
• LochbuieLow risk
• LongmontLow risk
• LouisvilleLow risk
• LovelandLow risk
• Manitou SpringsMedium risk
• Meridian MdLow risk
• MillikenLow risk
• Monte VistaLow risk
• Montezuma WcLow risk
• Montrose4 systems · low risk
• Monument2 systems · low risk
• MorrisonLow risk
• Mountain VillageLow risk
• New CastleLow risk
• NiwotLow risk
• North Weld CountyLow risk
• NorthglennLow risk
• Pagosa SpringsLow risk
• Paint Brush HillsLow risk
• ParachuteLow risk
• Parker3 systems · low risk
• Perry ParkLow risk
• Pueblo2 systems · low risk
• Pueblo WestMedium risk
• RifleMedium risk
• Rocky FordLow risk
• SalidaLow risk
• SeveranceLow risk
• SiltLow risk
• SilverthorneLow risk
• Snowmass VillageMedium risk
• Steamboat Springs2 systems · includes medium risk
• SterlingLow risk
• SuperiorLow risk
• TellurideMedium risk
• ThorntonLow risk
• TrinidadLow risk
• US Air Force AcademyLow risk
• VailLow risk
• Wellington2 systems · includes medium risk
• West Fort CollinsLow risk
• WestminsterLow risk
• Wheat Ridge2 systems · low risk
• WindsorLow risk
• Winter ParkLow risk
• Woodland ParkMedium risk
• Woodmen Hills MdLow risk
• WoodmoorLow risk
• YumaLow risk

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.