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EWG's Tap Water Database — 2019 UPDATE

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Colorado

  • 886 Utilities

  • Serving: 5,607,000

  • Data available: 2012-2017

  • Contaminants Found: 92

 

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, CO50,000
Bear Creek WSDLakewood, CO31,150
Canon CityCanon City, CO34,800
Castle RockCastle Rock, CO54,826
Centennial Water and Sanitation DistrictHighlands Ranch, CO88,042
Cherokee MDColorado Springs, CO20,600
Cherry Creek Valley WSDDenver, CO19,000
City and County of BroomfieldBroomfield, CO87,104
City of ArvadaArvada, CO107,161
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, CO32,700
City of DurangoDurango, CO23,069
City of EnglewoodEnglewood, CO46,541
City of EvansEvans, CO19,369
City of Federal HeightsFederal Heights, CO11,678
City of Fort CollinsFort Collins, CO129,100
City of FountainFountain, CO21,000
City of Ft MorganFort Morgan, CO12,000
City of GoldenGolden, CO28,232
City of GreeleyGreeley, CO91,109
City of LafayetteLafayette, CO27,651
City of LongmontLongmont, CO87,850
City of LouisvilleLouisville, CO19,500
City of LovelandLoveland, CO71,985
City of MontroseMontrose, CO17,000
City of NorthglennNorthglenn, CO35,357
More

Utilities that accumulated/accrued the most violation points as of April 2016 to March 2019 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
Coalby Domestic Water CompanyCedaredge, CO212205
Burlington, City ofBurlington, CO4,250157
Sun Meadow EstatesGlenwood Springs, CO49137
Jamestown, Town ofJamestown, CO324132
Rye, Town ofRye, CO244124
Mount Vernon Country ClubGolden, CO57294
Manzanola, Town ofManzanola, CO49761
Phippsburg, Town ofSteamboat Springs, CO20059
Somerset, Town ofSomerset, CO10059
Vroman Water CompanyManzanola, CO12559
Ymca Rockies Wind RiverEstes Park, CO3,73058
Oneal WsCentennial, CO35057
Cheraw, Town ofCheraw, CO25456
Rainbow Valley Water DistrictDivide, CO11552
Divide SouthDivide, CO6052
Aspen Village MdBasalt, CO30051
Valley Water CompanyManzanola, CO27050
Walsenburg, City ofWalsenburg, CO3,20050
Peetz, Town ofPeetz, CO29547
North Holbrook Water CompanyRocky Ford, CO7547
Patterson Valley Water CompanyRocky Ford, CO12045
Branson, Town ofBranson, CO11043
Woodlin SchoolWoodrow, CO13743
Holbrook Center Soft WaLa Junta, CO5141
Eureka Water CompanySwink, CO49840
Red Rock Valley Water DistrictFalcon, CO20039
Covenant Heights Conference CenterFort Collins, CO31838
San Souci Mobile Home ParkLouisville, CO15037
San Acacio Domestic WaSan Luis, CO4034
Highland Lakes Water DistrictDivide, CO87532

Large utilities that accumulated/accrued the most violation points as of April 2016 to March 2019 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 of Fort CollinsFort Collins, CO129,10013
Clifton WDClifton, CO34,50012
US Air Force AcademyUsaf Academy, CO16,87612
Town of BreckenridgeBreckenridge, CO36,2587
Widefield WSDColorado Springs, CO19,0005
Wheat Ridge Water DistrictWheat Ridge, CO24,0005
Pagosa Area WSDPagosa Springs, CO11,0694
City of AspenAspen, CO31,1004
City of LouisvilleLouisville, CO19,5004
Consolidated Mutual Maple GroveLakewood, CO30,8553
City of EvansEvans, CO19,3693
Upper Eagle Regional WAVail, CO31,5813
East Cherry Creek Valley Water and Sanitation DistrictAurora, CO50,5543
City of SterlingSterling, CO13,7942
Cherokee MDColorado Springs, CO20,6002
Grand JunctionGrand Junction, CO26,0002
Left Hand WDNiwot, CO18,7782
Stonegate MDParker, CO10,4131
Colorado Springs UtilitiesColorado Springs, CO418,0961
City of Federal HeightsFederal Heights, CO11,6781
Denver Water BoardDenver, CO1,000,0001
Mt Werner WDSteamboat Springs, CO16,9801
City of EnglewoodEnglewood, CO46,5411

Contaminants found in Colorado above health guidelines

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

Total trihalomethanes (TTHMs)
7845,569,2617855,572,409

Haloacetic acids (HAA5)
6675,522,9136675,522,913

Radium, combined (-226 & -228)
4364,007,3424384,008,610

Chromium (hexavalent)
1513,822,7661804,874,697

Bromodichloromethane
5933,771,8315923,771,637

Chloroform
5113,702,9005443,749,124

Dichloroacetic acid
4373,693,9394383,748,641

Trichloroacetic acid
3703,498,8603703,499,816

Dibromochloromethane
5513,318,2695623,435,680

Dibromoacetic acid
3482,764,7483492,806,748

Arsenic
2522,313,5622512,313,412

Uranium
3191,922,3064123,848,495

Nitrate
4801,516,6977414,969,130

Nitrate and nitrite
1651,367,1512523,675,324

Chlorite
651,045,087581,106,568

Bromoform
291971,2614222,761,999

Chlorate
16537,2241303,126,908

Radon
7216,2767216,276

Bromate
9212,63311212,858

Tetrachloroethylene (perchloroethylene)
696,453696,453

1,4-Dioxane
382,79315660,069

Thallium
2075,845521,542,632

Perfluorooctane sulfonate (PFOS)
359,000359,000

Perfluorooctanoic acid (PFOA)
359,000359,000

Perfluoroheptanoic acid (PFHPA)
359,000359,000

Perfluorohexane sulfonate (PFHXS)
359,000359,000

Cadmium
3158,408651,530,188

Vinyl chloride
326,263326,263

Perfluorobutane sulfonate (PFBS)
119,000119,000

1,2-Dibromo-3-chloropropane (DBCP)
16,00016,000

Antimony
32,555791,699,051

Ethylene dibromide
32,187715,331

Manganese
152554,516

Aluminum
15252566

Selenium
45183883,292,477

Di(2-ethylhexyl) phthalate
135049897,058

Lindane
22251992,859

Carbon tetrachloride
110028,490

Contaminants found in Colorado above legal limits

Contaminant# of UtilitiesPeople Served

Radium, combined (-226 & -228)
216,298

Nitrate
14,250

Uranium
4861

Total trihalomethanes (TTHMs)
4593

Haloacetic acids (HAA5)
3536

Arsenic
2395