PlainWater

Public Water Systems

2,193 active public water systems in CO, tracked from EPA's Safe Drinking Water Information System (SDWIS) across all 50 states. See our methodology.

Population Violations Health Violations Name
System Name Location Population Violations PFAS
Denver Water Board Denver, CO 1,287,000 383 Clean
Aurora City Of Aurora, CO 533,407 18 Detected
Colorado Springs Utilities Colorado Springs, CO 464,111 18 Clean
Thornton City Of Thornton, CO 226,465 36 Detected
Westminster City Of Westminster, CO 202,078 18 Clean
Ft Collins City Of Fort Collins, CO 179,901 49 Clean
Arvada City Of Arvada, CO 171,610 18 Clean
Boulder City Of Boulder, CO 166,080 31 Clean
Greeley City Of Greeley, CO 132,310 49 Clean
Pueblo Board of Ww Pueblo, CO 114,070 75 Clean
Castle Rock Town Of Castle Rock, CO 106,822 52 Detected
Broomfield City and County Of Broomfield, CO 106,153 12 Clean
Highlands Ranch WSD Highlands Ranch, CO 103,444 13 Detected
Longmont City Of Longmont, CO 102,866 78 Clean
Loveland City Of Loveland, CO 95,471 23 Clean
Ute Wcd Grand Junction, CO 91,186 19 Clean
Consolidated Mutual Maple Grove Lakewood, CO 81,400 18 Detected
Parker WSD Parker, CO 75,949 466 Detected
South Adams County WSD Commerce City, CO 74,341 0 Detected
East Cherry Creek Valley WSD Aurora, CO 66,130 1,783 Detected
Ft Collins Loveland WD Fort Collins, CO 63,532 7 Clean
Englewood City Of Englewood, CO 57,332 58 Detected
Brighton City Of Brighton, CO 56,304 89 Detected
Southgate WSD Centennial, CO 55,000 0 -
Eagle River WSD Vail, CO 51,515 66 Clean
Green Mountain WSD Lakewood, CO 49,400 6 -
Northglenn City Of Northglenn, CO 48,927 7 Clean
Southwest Metropolitan WSD Littleton, CO 48,648 0 -
US Department of the Army Fort Carson Fort Carson, CO 48,000 22 Clean
Bancroft Clover WSD Lakewood, CO 44,000 0 -
Erie Town Of Erie, CO 40,061 114 Clean
Golden City Of Golden, CO 38,288 0 Clean
Canon City City Of Canon City, CO 34,800 47 Clean
Clifton WD Clifton, CO 34,500 27 Clean
Durango City Of Durango, CO 33,787 45 Clean
Aspen City Of Aspen, CO 31,100 215 Clean
Arapahoe Cnty Wwwa Centennial, CO 31,000 521 Detected
Bear Creek WSD Lakewood, CO 30,000 0 -
Pueblo West MD Pueblo West, CO 30,000 118 Clean
Cherokee MD Colorado Springs, CO 29,610 180 Detected
Lafayette City Of Lafayette, CO 28,700 262 Clean
Breckenridge Town Of Breckenridge, CO 28,315 221 Clean
East Larimer County WD Fort Collins, CO 27,944 37 Clean
Firestone Town Of Firestone, CO 27,798 41 Clean
Widefield WSD Colorado Springs, CO 27,640 232 Detected
Csu Main and West Housing Campus Fort Collins, CO 27,375 50 Clean
Grand Junction City Of Grand Junction, CO 26,000 22 Clean
Little Thompson WD Berthoud, CO 25,654 7 Detected
Fountain City Of Fountain, CO 25,130 294 Detected
Johnstown Town Of Johnstown, CO 24,725 294 Clean
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