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EWG's Tap Water Database — 2021 UPDATE

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Colorado

  • 906 Utilities

  • Serving: 6,343,000

  • Data available: 2014-2019

  • Contaminants Found: 88

 

EWG's drinking water quality report for Colorado shows results of tests conducted by the water utilities in Colorado and provided to EWG by the Colorado Department of Public Health & Environment.

LARGE UTILITIES
ALL UTILITIES WITH VIOLATIONS
LARGE UTILITIES WITH VIOLATIONS

Below are utilities in Colorado serving over 10,000 people, listed alphabetically. Click the "more" button below to get the full list of utilities serving over 10,000 people.

Large utilities in Colorado

UtilityLocationPeople
Served
Arapahoe Cnty WwwaCentennial, CO31,000
Bancroft Clover WSDLakewood, CO44,000
Bear Creek WSDLakewood, CO30,000
Canon CityCanon City, CO34,800
Castle RockCastle Rock, CO92,372
Centennial Water and Sanitation DistrictHighlands Ranch, CO96,553
Cherokee MDColorado Springs, CO23,000
Cherry Creek Village Water DistrictEnglewood, CO10,000
City and County of BroomfieldBroomfield, CO93,051
City of ArvadaArvada, CO146,743
City of AspenAspen, CO31,100
City of AuroraAurora, CO314,346
City of Black HawkBlack Hawk, CO15,167
City of BoulderBoulder, CO166,080
City of BrightonBrighton, CO36,010
City of DurangoDurango, CO33,994
City of EnglewoodEnglewood, CO46,541
City of EvansEvans, CO19,369
City of Federal HeightsFederal Heights, CO11,678
City of Fort CollinsFort Collins, CO124,262
City of FountainFountain, CO29,000
City of Ft MorganFort Morgan, CO12,000
City of GoldenGolden, CO29,635
City of GreeleyGreeley, CO108,000
City of LafayetteLafayette, CO28,700
City of LongmontLongmont, CO87,850
City of LouisvilleLouisville, CO20,319
City of LovelandLoveland, CO75,840
City of MontroseMontrose, CO19,305
City of NorthglennNorthglenn, CO49,650
More

Utilities that accumulated/accrued the most violation points as of April 2019 to March 2021 in Colorado

The Environmental Protection Agency's Enforcement and Compliance History Online (ECHO) database collects compliance and enforcement-related information for drinking water utilities nationwide. ECHO water quality violation scores take into account federal health-based water quality standards, as well as monitoring, reporting and other drinking water quality requirements. Points are accrued based on specific problems at the utility - violations of health-based drinking water standards receive more points than monitoring and reporting violations - and the length of time until the violations were corrected.

UtilityLocationPeople
Served
Violation
Points
Riverside Water CompanyRocky Ford, CO90121
Sun Meadow EstatesGlenwood Springs, CO5095
Beehive Water Company No. 1Cheraw, CO15495
Brighton Village LlcWheat Ridge, CO7790
High Valley Mobile Home ParkAlamosa, CO8586
Vroman Water CompanyManzanola, CO12584
Cheraw, Town ofCheraw, CO25482
Walsenburg, City ofWalsenburg, CO3,23080
Somerset, Town ofSomerset, CO10080
Valley Water CompanyManzanola, CO27076
Manzanola, Town ofManzanola, CO49775
Fayette Water CompanyManzanola, CO7571
Peak View Park LlcWoodland Park, CO7071
North Holbrook Water CompanyRocky Ford, CO5871
Patterson Valley Water CompanyRocky Ford, CO9670
May Valley WaWiley, CO1,50070
Sheridan Lake Water CompanySheridan Lake, CO16070
South Swink Water CompanyLa Junta, CO60770
Eureka Water CompanySwink, CO49870
Wishing Well MotelColorado Springs, CO3467
Peetz, Town ofPeetz, CO29565
East End WaLa Junta, CO7062
Holbrook Center Soft WaLa Junta, CO5160
Elephant Rock Mobile Home ParkCastle Rock, CO6046
Louviers Water & Sanitation DistrictCastle Rock, CO23845
West Grand Valley WaRocky Ford, CO10040
Panoramic Mesa SubdivisionSilt, CO4535
Ymca Rockies Wind RiverEstes Park, CO3,73032
Asgard Subdivision WaSilt, CO8030
Rye, Town ofRye, CO74527

Large utilities that accumulated/accrued the most violation points as of April 2019 to March 2021 in Colorado

The Environmental Protection Agency's Enforcement and Compliance History Online (ECHO) database collects compliance and enforcement-related information for drinking water utilities nationwide. ECHO water quality violation scores take into account federal health-based water quality standards, as well as monitoring, reporting and other drinking water quality requirements. Points are accrued based on specific problems at the utility - violations of health-based drinking water standards receive more points than monitoring and reporting violations - and the length of time until the violations were corrected.

UtilityLocationPeople
Served
Violation
Points
City and County of BroomfieldBroomfield, CO93,0515
City of TrinidadTrinidad, CO11,4003
Pagosa Area WSDPagosa Springs, CO11,0691
WindsorWindsor, CO13,5001
Stonegate MDParker, CO15,0711
US Air Force AcademyUsaf Academy, CO16,8761
Mt Werner WDSteamboat Springs, CO16,9801
City of LafayetteLafayette, CO28,7001
City of AspenAspen, CO31,1001
City of LovelandLoveland, CO75,8401
Centennial Water and Sanitation DistrictHighlands Ranch, CO96,5531
City of GreeleyGreeley, CO108,0001

Contaminants found in Colorado above health guidelines

Found above health guidelinesFound
Contaminant# of UtilitiesPeople Served# of UtilitiesPeople Served

Total trihalomethanes (TTHMs)
8126,312,2948136,312,359

Haloacetic acids (HAA5)
6836,229,5086836,229,508

Bromodichloromethane
6496,072,4566496,072,456

Chloroform
5766,002,7526026,050,657

Dichloroacetic acid
4865,903,9854895,914,892

Trichloroacetic acid
4275,668,6654305,767,680

Haloacetic acids (HAA9)
1685,413,0191885,592,412

Dibromochloromethane
6075,163,7626185,337,932

Radium, combined (-226 & -228)
6084,630,7385964,502,207

Chromium (hexavalent)
1564,362,9321895,530,339

Dibromoacetic acid
3854,165,8283884,219,313

Arsenic
3082,831,1413082,831,141

Uranium
4362,174,1625524,696,268

Bromoform
3251,750,3384623,972,357

Nitrate
4971,588,7207565,797,066

Chlorite
721,235,220581,177,613

Nitrate and nitrite
2191,231,9893234,176,445

Chlorate
18632,8071353,443,986

Bromate
8271,4509271,644

1,4-Dioxane
388,41615692,461

Perfluorohexane sulfonate (PFHXS)
370,414370,414

Perfluorooctane sulfonate (PFOS)
370,414370,414

Perfluorooctanoic acid (PFOA)
370,414370,414

Perfluoroheptanoic acid (PFHPA)
370,414370,414

Cadmium
4558,676831,869,909

Tetrachloroethylene (perchloroethylene)
748,6028112,410

Manganese
131,0001945,394,126

Perfluorobutane sulfonate (PFBS)
119,000119,000

Lindane
617,52025103,916

1,2-Dibromo-3-chloropropane (DBCP)
26,05526,055

Thallium
106,034491,858,326

Selenium
51,7325174,199,116

Ethylene dibromide
16001020,892

Heptachlor epoxide
14001400

1,2-Dichloroethane
130130

Contaminants found in Colorado above legal limits