Official PFAS Records

Colorado PFAS Watchlist

Official EPA UCMR 5 PFAS monitoring records for public water systems in Colorado. 154 water systems with qualifying official records.

Source retrieved: May 26, 2026 · EPA UCMR 5

Monitoring results are not compliance determinations. Missing records do not establish absence of PFAS. Methodology

Colorado PFAS dataset — for journalists & researchers

Full state-level detection data with downloadable CSV, methodology, and citation formats.

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154

Systems with records

27,272

Total records

424

Official detections

Water System	PWSID	Analytes in records	Records	Detections
Denver Water Board Denver	CO0116001	PFOS9Cl-PF3ONS11Cl-PF3OUdSPFUnAPFHxA+24	435	0	View
City of Aurora	CO0103005	PFOSPFNAPFHxSPFHpAPFBS+24	348	4 detected	View
Colorado Springs Utilities Colorado Springs	CO0121150	11Cl-PF3OUdSPFUnAPFHxADONA9Cl-PF3ONS+24	696	0	View
City of Thornton Thornton	CO0101150	PFDAPFDoAPFHxAPFUnAPFEESA+24	203	35 detected	View
City of Westminster Westminster	CO0101170	PFTeDANEtFOSAANMeFOSAAPFUnAPFOA+24	232	0	View
City of Ft Collins	CO0135291	PFMPAPFPeA4:2FTSPFPeSPFHpS+24	116	0	View
City of Arvada Arvada	CO0130001	PFTrDAPFDoAHFPO-DAPFMPAPFEESA+24	232	0	View
City of Boulder Boulder	CO0107152	PFMBAPFUnAPFOAPFPeAPFBA+24	232	0	View
City of Greeley Greeley	CO0162321	4:2FTSPFTeDAPFBSPFMPANMeFOSAA+24	232	0	View
Pueblo Board of Ww Pueblo	CO0151500	PFMPA8:2FTSPFUnA11Cl-PF3OUdS9Cl-PF3ONS+24	116	0	View
Town of Castle Rock	CO0118010	NEtFOSAAPFTrDANMeFOSAAPFTeDAPFOA+24	348	3 detected	View
County of Broomfield City and Broomfield	CO0107155	PFDoA11Cl-PF3OUdS9Cl-PF3ONSDONAHFPO-DA+24	116	0	View
Highlands Ranch Wsd Highlands Ranch	CO0118015	PFBSPFDAPFOAPFOSPFNA+24	203	10 detected	View
City of Longmont Longmont	CO0107485	NFDHAPFMBA8:2FTSNMeFOSAA6:2FTS+24	116	0	View
City of Loveland	CO0135485	PFDoADONA11Cl-PF3OUdSPFDAPFOA+24	145	0	View
Ute Wcd	CO0139791	NFDHAPFEESAPFTeDAPFDADONA+24	116	0	View
Consolidated Mutual Maple Grove	CO0130020	PFNAHFPO-DAPFHxA6:2FTS4:2FTS+24	116	3 detected	View
Parker Wsd	CO0118040	6:2FTSNEtFOSAANMeFOSAAPFNAPFOS+24	754	28 detected	View
South Adams County Wsd	CO0101140	PFBSPFHxAPFDoAPFDAPFOA+24	348	12 detected	View
East Cherry Creek Valley Wsd	CO0103035	PFDoAPFOSPFBAHFPO-DADONA+24	290	3 detected	View
Ft Collins Loveland Wd	CO0135292	PFPeSPFBAPFPeAPFNAPFMPA+24	232	0	View
City of Englewood	CO0103045	PFHxAPFBSPFHpAPFTrDANEtFOSAA+24	116	11 detected	View
City of Brighton	CO0101025	8:2FTSPFPeAPFMBAPFEESANFDHA+24	464	77 detected	View
Eagle River Wsd	CO0119802	PFPeAPFHpSPFUnAPFDoA6:2FTS+24	812	0	View
City of Northglenn	CO0101115	6:2FTSPFDoANEtFOSAANMeFOSAAPFHpA+24	116	0	View
Us Department of the Army Fort Carson	CO0221445	PFOSPFHxS6:2FTSPFMPAPFTrDA+24	116	0	View
Town of Erie	CO0162255	6:2FTSPFMBAPFUnAPFPeAPFMPA+24	116	0	View
City of Golden	CO0130040	PFUnAPFHpAPFOAPFOSPFNA+24	116	0	View
City of Canon City	CO0122100	PFPeSPFHpAPFHxSPFNAPFOS+24	116	0	View
Clifton Wd	CO0139180	PFTeDA6:2FTS4:2FTSPFMPAPFPeA+24	116	0	View
City of Durango	CO0134150	PFDoAPFHxAPFUnA11Cl-PF3OUdS9Cl-PF3ONS+24	116	0	View
City of Aspen	CO0149122	6:2FTSHFPO-DADONA9Cl-PF3ONS11Cl-PF3OUdS+24	116	0	View
Arapahoe Cnty Wwwa	CO0203002	PFTrDANMeFOSAANEtFOSAAPFTeDA11Cl-PF3OUdS+24	406	8 detected	View
Pueblo West Md Pueblo	CO0151650	HFPO-DA6:2FTS4:2FTS8:2FTSPFPeA+24	348	0	View
Cherokee Md	CO0121125	HFPO-DAPFDANEtFOSAAPFTrDAPFTeDA+24	174	9 detected	View
City of Lafayette	CO0107473	PFPeAPFPeSNEtFOSAAPFDAPFHxS+24	232	0	View
Town of Breckenridge	CO0159020	PFDoANFDHANEtFOSAAPFHpSPFNA+24	116	0	View
East Larimer County Wd	CO0135233	PFHxAPFMPAPFPeANFDHADONA+24	116	0	View
Town of Firestone	CO0162476	PFPeANFDHAPFHpSPFTeDAPFTrDA+24	116	0	View
Widefield Wsd	CO0121900	9Cl-PF3ONSPFHpAPFEESAPFPeAPFMPA+24	696	61 detected	View
Csu Main and West Housing Campus	CO0235184	PFOAPFDAPFDoAPFHxAPFUnA+24	29	0	View
Town of Johnstown	CO0162418	4:2FTS6:2FTSPFBA8:2FTSDONA+24	116	0	View
City of Grand Junction	CO0139321	11Cl-PF3OUdSPFHpAPFBSHFPO-DADONA+24	116	0	View
Little Thompson Wd	CO0135477	PFPeS4:2FTSPFHpSPFHxSPFMPA+24	116	1 detected	View
City of Fountain	CO0121275	PFNAPFTrDANFDHAPFPeS9Cl-PF3ONS+24	406	30 detected	View
Town of Windsor	CO0162843	PFDoAHFPO-DA6:2FTSPFOSPFUnA+24	348	0	View
Meridian Md	CO0218015	PFMBAPFEESANFDHANMeFOSAAPFTrDA+24	232	0	View
City of Louisville	CO0107487	PFBAPFDoAPFUnA11Cl-PF3OUdS9Cl-PF3ONS+24	232	0	View
Tri County Wcd	CO0143755	PFOAPFOSPFHpAPFHpSPFPeS+24	116	0	View
Left Hand Wd	CO0107471	PFDAPFNAPFMBAPFPeAPFEESA+24	232	0	View
Security Water District	CO0121775	PFBS4:2FTS8:2FTSPFMPAPFMBA+24	179	10 detected	View
City of Evans	CO0162260	11Cl-PF3OUdSDONAHFPO-DAPFBA6:2FTS+24	116	0	View
City of Montrose	CO0143518	8:2FTSHFPO-DANMeFOSAANEtFOSAAPFTrDA+24	116	0	View
Mt Werner Wd	CO0154524	9Cl-PF3ONSPFPeS4:2FTSDONAHFPO-DA+24	232	0	View
Woodmoor Wsd	CO0121950	PFHxAPFUnA11Cl-PF3OUdSNFDHAPFTeDA+24	406	1 detected	View
Superior Md No 1	CO0107725	PFHpADONAPFPeSPFBS6:2FTS+24	116	0	View
Town of Frederick	CO0162288	PFTeDAPFTrDANMeFOSAANEtFOSAADONA+24	91	0	View
Us Air Force Academy	CO0121845	NFDHA6:2FTSPFTeDAPFPeANEtFOSAA+24	116	0	View
Town of Estes Park	CO0135257	PFUnAPFEESAPFHxANMeFOSAAPFDA+24	232	0	View
North Weld County Wd	CO0162553	HFPO-DAPFHpAPFHxSPFOSPFUnA+24	232	0	View
Evergreen Md	CO0130030	DONAPFNA4:2FTSPFHxAPFUnA+24	116	0	View
Stonegate Md	CO0118076	PFEESANFDHAPFPeSPFHpSPFPeA+24	116	6 detected	View
Town of Gypsum	CO0119329	11Cl-PF3OUdSPFTrDAPFHpSPFPeSNFDHA+24	232	0	View
City of Black Hawk	CO0124147	PFUnAPFPeSPFHxSDONAPFTrDA+24	232	0	View
City of Sterling	CO0138045	PFNAPFBAHFPO-DAPFHpSPFTeDA+24	116	0	View
Town of Berthoud	CO0135138	PFHxAPFPeA9Cl-PF3ONS11Cl-PF3OUdSPFNA+24	116	0	View
Woodmen Hills Md	CO0121930	PFTrDAPFHxAPFBSPFEESANEtFOSAA+24	149	0	View
Montezuma Wc	CO0142900	PFPeA8:2FTS4:2FTSPFEESAPFBA+24	116	0	View
Roxborough Wsd	CO0118055	PFEESAPFMBAPFMPA8:2FTS11Cl-PF3OUdS+24	116	0	View
Pinery Wwd	CO0118025	11Cl-PF3OUdSPFUnA9Cl-PF3ONSDONAHFPO-DA+24	406	11 detected	View
Castle Pines North Md	CO0118006	9Cl-PF3ONSPFTrDANMeFOSAAPFBSPFHpA+24	58	4 detected	View
Meridian Service Md	CO0121455	PFMBA9Cl-PF3ONSPFTrDAPFTeDANEtFOSAA+24	58	0	View
City of Ft Lupton	CO0162291	NMeFOSAAPFTrDAPFTeDANEtFOSAAPFMPA+24	116	0	View
City of Ft Morgan	CO0144005	PFTeDANMeFOSAA6:2FTSDONAHFPO-DA+24	116	0	View
Town of Severance	CO0162707	PFTrDANEtFOSAANMeFOSAAPFTeDAPFDA+24	66	0	View
Town of Wellington	CO0135838	DONAHFPO-DA6:2FTSPFUnAPFMPA+24	174	0	View
City of Federal Heights	CO0101055	4:2FTS8:2FTSHFPO-DAPFMPAPFPeA+24	174	0	View
City of Trinidad	CO0136800	PFMPAPFPeSNMeFOSAAPFTeDAPFTrDA+24	116	0	View
City of Alamosa	CO0102100	PFHpS6:2FTSHFPO-DA9Cl-PF3ONSPFUnA+24	58	0	View
Pagosa Area Wsd	CO0104300	9Cl-PF3ONSPFDAPFDoAPFPeSNFDHA+24	348	0	View
Cottonwood Wsd	CO0118020	6:2FTS4:2FTS8:2FTSPFHxAPFDA+24	174	10 detected	View
City of Idaho Springs	CO0110020	PFHpAPFOA9Cl-PF3ONSPFDoAPFHxA+24	116	0	View
North Table Mountain Wsd	CO0130105	8:2FTS4:2FTS6:2FTSPFBAHFPO-DA+24	116	0	View
City of Steamboat Springs	CO0154725	PFMBAPFPeAPFMPA8:2FTS4:2FTS+24	116	0	View
Snake River Wd	CO0159105	PFNAHFPO-DA6:2FTSPFEESAPFMBA+24	116	12 detected	View
Town of Morrison	CO0130085	PFNAPFHxAPFTeDAPFUnAPFOS+24	116	5 detected	View
Town of Mountain Village	CO0157400	PFDoAPFHxAPFUnA11Cl-PF3OUdSPFTrDA+24	232	4 detected	View
St Charles Mesa Wd	CO0151750	PFBSPFDA6:2FTSPFHpSPFPeS+24	124	0	View
City of Gunnison	CO0126325	NEtFOSAAPFHxSPFNAPFOAPFDoA+24	522	6 detected	View
City of Rifle	CO0123676	PFMBANFDHA6:2FTSPFHpS4:2FTS+24	116	0	View
City of Glenwood Springs	CO0123314	PFTrDAPFTeDANMeFOSAANEtFOSAAPFUnA+24	116	0	View
Town of Milliken	CO0162511	PFBSPFOAPFDAPFDoAPFUnA+24	124	0	View
City of Craig	CO0141188	PFTrDANMeFOSAAPFTeDANEtFOSAANFDHA+24	116	0	View
City of Cortez	CO0142200	PFHxAPFDoAPFDAPFOAPFOS+24	66	0	View
City of Delta	CO0115205	PFMPAPFHxAPFHxSPFDoAPFDA+24	116	1 detected	View
City of Woodland Park	CO0160900	PFTrDANMeFOSAANEtFOSAAPFTeDA11Cl-PF3OUdS+24	62	0	View
Town of Silverthorne	CO0159095	PFHpSPFOSPFNAPFHxSPFHpA+24	232	5 detected	View
City of La Junta	CO0145420	PFHpAPFBSPFMPAPFHpSPFMBA+24	58	0	View
Inverness Wsd	CO0203012	4:2FTSDONA6:2FTSPFEESAPFOS+24	464	1 detected	View
Morgan County Quality Wd	CO0144020	PFBAHFPO-DADONA9Cl-PF3ONS11Cl-PF3OUdS+24	174	0	View
Town of Telluride	CO0157800	PFMBAPFUnA11Cl-PF3OUdS9Cl-PF3ONSDONA+24	232	0	View
Central Weld Cnty Wd	CO0162122	9Cl-PF3ONSNMeFOSAAPFTeDANEtFOSAAPFTrDA+24	91	0	View
Town of Eagle	CO0119233	NFDHA8:2FTSPFMPAPFPeAPFMBA+24	232	0	View
City of Florence	CO0122500	PFTrDAPFTeDANEtFOSAANMeFOSAA8:2FTS+24	62	0	View
City of Lamar	CO0150700	PFPeA11Cl-PF3OUdS6:2FTSPFBAHFPO-DA+24	58	2 detected	View
Parkville Wd	CO0133700	PFMBAHFPO-DAPFHxSPFTrDANMeFOSAA+24	174	0	View
Town of Eaton	CO0162233	PFHpSPFUnAPFPeS9Cl-PF3ONSPFBS+24	87	0	View
Todd Creek Village Md	CO0101157	PFHxSPFNAPFOSPFOAPFDA+24	116	22 detected	View
City of Manitou Springs	CO0121450	PFUnAPFTrDA9Cl-PF3ONSDONAPFDoA+24	116	0	View
City of Dacono	CO0162200	PFHxAPFPeSNFDHAPFDA11Cl-PF3OUdS+24	116	0	View
Town of Carbondale	CO0123167	NEtFOSAANMeFOSAAPFTrDAPFTeDAPFMPA+24	261	0	View
Winter Park Wsd	CO0125843	11Cl-PF3OUdSPFOSNEtFOSAANMeFOSAAPFHxS+24	87	0	View
Town of Lochbuie	CO0162486	PFBSPFTrDAPFEESAHFPO-DAPFBA+24	58	5 detected	View
Stratmoor Hills Wsd	CO0121800	PFTrDANMeFOSAANEtFOSAAPFTeDAPFDA+24	62	8 detected	View
Donala Wsd	CO0121175	NEtFOSAAPFMPA11Cl-PF3OUdS9Cl-PF3ONSDONA+24	232	0	View
Snowmass Village Wsd	CO0149717	PFDoA6:2FTSPFBADONANEtFOSAA+24	116	0	View
Northern Douglas County Wsd	CO0118016	4:2FTSPFOAPFBADONA9Cl-PF3ONS+24	116	9 detected	View
Copper Mountain Consolidated Md	CO0159030	PFDoAPFHxAPFUnA11Cl-PF3OUdS9Cl-PF3ONS+24	116	0	View
Town of Monument	CO0121475	PFTrDAHFPO-DADONA9Cl-PF3ONS11Cl-PF3OUdS+24	348	0	View
Triview Md	CO0121840	6:2FTSPFHxAPFUnA11Cl-PF3OUdSPFDA+24	29	0	View
City of Salida	CO0108700	PFPeAHFPO-DADONA9Cl-PF3ONS11Cl-PF3OUdS+24	232	0	View
Castle Pines Village Md	CO0118005	PFDoADONA11Cl-PF3OUdSPFMBANEtFOSAA+24	116	0	View
Grand County Water No 1	CO0125323	NFDHA8:2FTS4:2FTS6:2FTSPFBA+24	179	1 detected	View
City of Brush	CO0144001	NMeFOSAA8:2FTSPFPeAPFMBAPFEESA+24	29	0	View
Town of Limon	CO0137015	DONAPFPeSPFTrDAPFTeDAPFHpS+24	58	0	View
Town of New Castle	CO0123538	PFOSPFNAPFHxSPFBSPFHxA+24	116	0	View
Paint Brush Hills	CO0221690	PFHxAPFUnAPFPeAPFTeDANMeFOSAA+24	116	0	View
Northern Colorado Wa	CO0135554	PFHpSNFDHAPFMBA6:2FTSPFBA+24	290	0	View
City of Monte Vista	CO0153600	PFTrDANMeFOSAAPFBSPFBAPFHpA+24	174	0	View
Mid Valley Md	CO0119508	4:2FTS8:2FTSNEtFOSAAPFOSPFOA+24	174	0	View
Menoken Wd	CO0143506	PFBA6:2FTSNMeFOSAAPFHpSPFMBA+24	116	0	View
Town of Frisco	CO0159055	11Cl-PF3OUdSHFPO-DADONA9Cl-PF3ONSPFBA+24	232	0	View
City of Rocky Ford	CO0145600	PFBADONA9Cl-PF3ONS11Cl-PF3OUdSPFUnA+24	58	5 detected	View
Battlement Mesa Md	CO0123133	PFBAHFPO-DA9Cl-PF3ONSPFMPA11Cl-PF3OUdS+24	87	0	View
City of Yuma	CO0163020	PFMBAPFPeAPFMPA8:2FTS4:2FTS+24	348	0	View
Park Center Wd	CO0122600	PFBAPFOSPFDA6:2FTSDONA+24	116	0	View
West Fort Collins Wd Fort Collins	CO0135290	8:2FTSNEtFOSAAPFHpSPFPeSNFDHA+24	116	0	View
Town of Hayden	CO0154333	PFHxA9Cl-PF3ONSPFDAPFUnA8:2FTS+24	116	0	View
Genesee Wsd	CO0130035	PFBSNMeFOSAANEtFOSAAPFTrDAPFTeDA+24	116	0	View
Perry Park Wsd	CO0118045	11Cl-PF3OUdSPFDoAPFTrDANEtFOSAANMeFOSAA+24	203	0	View
Chipeta Wd	CO0143176	PFHxAPFUnA11Cl-PF3OUdS9Cl-PF3ONSDONA+24	116	1 detected	View
Town of Buena Vista	CO0108300	11Cl-PF3OUdSPFHpSPFMBAPFPeAPFMPA+24	116	0	View
City of Central City	CO0124171	PFHpS4:2FTS8:2FTSPFMPAPFPeA+24	116	0	View
Ymca Rockies Wind River	CO0135883	PFOSPFMBAPFDoAPFDAPFHxA+24	116	0	View
City of Burlington	CO0132005	9Cl-PF3ONSPFBAPFPeAPFBSPFHpA+24	116	0	View
Colorado Centre Md	CO0121140	PFTrDAPFNAPFTeDAHFPO-DADONA+24	29	0	View
Advenir French Quarter Denver	CO0116104	9Cl-PF3ONSDONAHFPO-DAPFBA6:2FTS+24	116	0	View
Town of Hudson	CO0162359	NEtFOSAAPFTeDANMeFOSAAPFTrDAPFMPA+24	91	0	View
City of Creede	CO0140500	PFDAPFOAPFOSPFTeDAPFNA+24	58	0	View
Town of Dolores	CO0142400	PFPeAPFOSPFNAPFBS4:2FTS+24	116	0	View
Town of Antonito	CO0111100	DONAPFTrDAPFHpSPFPeSNFDHA+24	116	0	View
Two Rivers Village	CO0119720	PFDANEtFOSAAPFMBA9Cl-PF3ONSPFTeDA+24	58	0	View
Golden Terrace West Golden	CO0130319	PFPeANFDHADONAPFMPA8:2FTS+24	87	0	View
Ymca Snow Mtn Ranch	CO0125916	PFEESAPFPeAPFMPA8:2FTSPFMBA+24	116	0	View

Source: EPA UCMR 5 Occurrence Data · Methodology

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