Colorado water providers

Find published drinking-water records, providers, and official agency resources for Colorado. Review sources, sample dates, and coverage.

Official drinking-water resources

• Colorado Department of Public Health and Environment - Water Quality Control Division
• Colorado Department of Public Health and Environment Safe Water Information Finder Tool
• CDPHE — PFAS data and maps

The responsible agency may differ for tribal systems. Record availability and sample dates vary by provider.

Community systems appear first. Sort: Population served · A–Z

Public water systems

2,209 systems in the imported directory. Includes community systems, schools, workplaces, and other public systems.

• Denver Water BoardCO0116001 · CWS · Population served: 1,287,000
• City of AuroraCO0103005 · CWS · Population served: 533,407
• Colorado Springs UtilitiesCO0121150 · CWS · Population served: 464,111
• City of ThorntonCO0101150 · CWS · Population served: 226,465
• City of WestminsterCO0101170 · CWS · Population served: 202,078
• City of Ft CollinsCO0135291 · CWS · Population served: 179,901
• City of ArvadaCO0130001 · CWS · Population served: 171,610
• City of BoulderCO0107152 · CWS · Population served: 166,080
• City of GreeleyCO0162321 · CWS · Population served: 132,310
• Pueblo Board of WwCO0151500 · CWS · Population served: 114,070
• Town of Castle RockCO0118010 · CWS · Population served: 110,298
• County of Broomfield City AndCO0107155 · CWS · Population served: 106,153
• City of LongmontCO0107485 · CWS · Population served: 104,178
• Highlands Ranch WSDCO0118015 · CWS · Population served: 103,444
• Ute WcdCO0139791 · CWS · Population served: 92,580
• City of LovelandCO0135485 · CWS · Population served: 91,077
• Consolidated Mutual Maple GroveCO0130020 · CWS · Population served: 81,400
• Parker WSDCO0118040 · CWS · Population served: 75,949
• South Adams County WSDCO0101140 · CWS · Population served: 75,559
• East Cherry Creek Valley WSDCO0103035 · CWS · Population served: 66,130
• Ft Collins Loveland WdCO0135292 · CWS · Population served: 63,532
• City of EnglewoodCO0103045 · CWS · Population served: 57,332
• City of BrightonCO0101025 · CWS · Population served: 56,304
• Southgate WSDCO0103721 · CWS · Population served: 55,000
• Eagle River WSDCO0119802 · CWS · Population served: 51,515
• Green Mountain WSDCO0130321 · CWS · Population served: 49,400
• City of NorthglennCO0101115 · CWS · Population served: 48,927
• Southwest Metropolitan WSDCO0103723 · CWS · Population served: 48,648
• US Department of The Army Fort CarsonCO0221445 · CWS · Population served: 48,000
• Town of ErieCO0162255 · CWS · Population served: 47,444
• Bancroft Clover WSDCO0130133 · CWS · Population served: 44,000
• City of GoldenCO0130040 · CWS · Population served: 38,288
• City of Canon CityCO0122100 · CWS · Population served: 34,800
• Clifton WdCO0139180 · CWS · Population served: 34,500
• City of DurangoCO0134150 · CWS · Population served: 33,787
• City of AspenCO0149122 · CWS · Population served: 31,100
• Arapahoe Cnty WwwaCO0203002 · CWS · Population served: 31,000
• Bear Creek WSDCO0130138 · CWS · Population served: 30,000
• Pueblo West MdCO0151650 · CWS · Population served: 30,000
• Cherokee MdCO0121125 · CWS · Population served: 29,610
• City of LafayetteCO0107473 · CWS · Population served: 28,700
• Town of BreckenridgeCO0159020 · CWS · Population served: 28,315
• East Larimer County WdCO0135233 · CWS · Population served: 27,944
• Town of FirestoneCO0162476 · CWS · Population served: 27,798
• Widefield WSDCO0121900 · CWS · Population served: 27,640
• Csu Main And West Housing CampusCO0235184 · CWS · Population served: 27,375
• Town of JohnstownCO0162418 · CWS · Population served: 27,295
• City of Grand JunctionCO0139321 · CWS · Population served: 26,000
• Little Thompson WdCO0135477 · CWS · Population served: 25,654
• City of FountainCO0121275 · CWS · Population served: 25,130
• Crestview WSDCO0101040 · CWS · Population served: 23,756
• Town of WindsorCO0162843 · CWS · Population served: 23,500
• Meridian MdCO0218015 · CWS · Population served: 23,415
• Cherry Creek Valley WSDCO0116175 · CWS · Population served: 22,000
• City of LouisvilleCO0107487 · CWS · Population served: 20,975
• Tri County WcdCO0143755 · CWS · Population served: 20,490
• Left Hand WdCO0107471 · CWS · Population served: 20,280
• Security Water DistrictCO0121775 · CWS · Population served: 20,000
• Wheat Ridge Water DistrictCO0130842 · CWS · Population served: 20,000
• Platte Canyon WSDCO0103614 · CWS · Population served: 19,485
• City of EvansCO0162260 · CWS · Population served: 19,369
• City of MontroseCO0143518 · CWS · Population served: 19,305
• Mt Werner WdCO0154524 · CWS · Population served: 19,000
• Willows WdCO0103100 · CWS · Population served: 19,000
• Woodmoor WSDCO0121950 · CWS · Population served: 18,031
• Superior Md No 1CO0107725 · CWS · Population served: 17,900
• Town of FrederickCO0162288 · CWS · Population served: 17,173
• US Air Force AcademyCO0121845 · CWS · Population served: 16,876
• Town of Estes ParkCO0135257 · CWS · Population served: 16,722
• North Weld County WdCO0162553 · CWS · Population served: 15,890
• Evergreen MdCO0130030 · CWS · Population served: 15,750
• Stonegate MdCO0118076 · CWS · Population served: 15,295
• Town of GypsumCO0119329 · CWS · Population served: 15,272
• City of Black HawkCO0124147 · CWS · Population served: 15,167
• City of SterlingCO0138045 · CWS · Population served: 15,100
• North Washington Street WSDCO0101105 · CWS · Population served: 14,500
• Town of BerthoudCO0135138 · CWS · Population served: 14,211
• Woodmen Hills MdCO0121930 · CWS · Population served: 13,888
• Montezuma WcCO0142900 · CWS · Population served: 13,797
• Roxborough WSDCO0118055 · CWS · Population served: 13,765
• Pinery WwdCO0118025 · CWS · Population served: 12,901
• Castle Pines North MdCO0118006 · CWS · Population served: 12,800
• Meridian Service MdCO0121455 · CWS · Population served: 12,760
• City of Ft LuptonCO0162291 · CWS · Population served: 12,099
• City of Ft MorganCO0144005 · CWS · Population served: 12,000
• Ken Caryl WSDCO0103075 · CWS · Population served: 12,000
• Lakehurst WSDCO0130466 · CWS · Population served: 12,000
• Town of SeveranceCO0162707 · CWS · Population served: 11,733
• Town of WellingtonCO0135838 · CWS · Population served: 11,720
• City of Federal HeightsCO0101055 · CWS · Population served: 11,678
• Sterling Ranch CabCO0118724 · CWS · Population served: 11,501
• City of TrinidadCO0136800 · CWS · Population served: 11,400
• City of AlamosaCO0102100 · CWS · Population served: 11,271
• Pagosa Area WSDCO0104300 · CWS · Population served: 11,069
• Cottonwood WSDCO0118020 · CWS · Population served: 10,867
• City of Idaho SpringsCO0110020 · CWS · Population served: 10,432
• North Table Mountain WSDCO0130105 · CWS · Population served: 10,000
• Valley WdCO0130800 · CWS · Population served: 10,000
• City of Steamboat SpringsCO0154725 · CWS · Population served: 9,950
• Snake River WdCO0159105 · CWS · Population served: 9,900