Official PFAS Records

Colorado PFAS Watchlist

Official EPA UCMR 5 PFAS monitoring records for public water systems in Colorado. 128 water systems with qualifying official records.

Source retrieved: April 20, 2026 · EPA UCMR 5

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

128

Systems with records

23,089

Total records

400

Official detections

Water System	PWSID	Analytes in records	Records	Detections
Denver Water Board Denver	CO0116001	PFPeAPFNAPFHxSPFHpAPFBS+24	87	0	View
City of Aurora	CO0103005	PFHxSPFHpAPFBSPFUnA11Cl-PF3OUdS+24	348	4 detected	View
Colorado Springs Utilities Colorado Springs	CO0121150	PFDANMeFOSAAPFDoA11Cl-PF3OUdSPFUnA+24	696	0	View
City of Thornton Thornton	CO0101150	PFBSPFMPAPFPeAPFMBA11Cl-PF3OUdS+24	203	35 detected	View
City of Westminster Westminster	CO0101170	PFHpS8:2FTSNFDHAPFMPAPFPeA+24	232	0	View
City of Ft Collins	CO0135291	NMeFOSAA6:2FTSPFNADONA9Cl-PF3ONS+24	116	0	View
City of Arvada Arvada	CO0130001	PFTrDAPFTeDAPFHpSPFPeSNFDHA+24	232	0	View
City of Greeley Greeley	CO0162321	HFPO-DADONA9Cl-PF3ONSPFEESANEtFOSAA+24	232	0	View
Pueblo Board of Ww Pueblo	CO0151500	PFHpAPFHxSPFNA6:2FTSPFOA+24	116	0	View
Town of Castle Rock	CO0118010	NEtFOSAAPFTrDANMeFOSAAPFTeDAPFUnA+24	348	3 detected	View
Highlands Ranch Wsd Highlands Ranch	CO0118015	4:2FTSPFEESAPFHxAPFBADONA+24	203	10 detected	View
City of Longmont Longmont	CO0107485	PFNA4:2FTSPFPeANEtFOSAAPFBS+24	116	0	View
City of Loveland	CO0135485	NEtFOSAAPFUnAPFHxA9Cl-PF3ONSPFDoA+24	145	0	View
Ute Wcd	CO0139791	PFHxSPFHpAPFBSNMeFOSAAPFTrDA+24	116	0	View
Consolidated Mutual Maple Grove	CO0130020	PFBAPFOSPFOAPFDAPFDoA+24	116	3 detected	View
Parker Wsd	CO0118040	PFTrDADONAPFOANFDHAPFMBA+24	754	28 detected	View
South Adams County Wsd	CO0101140	PFUnAPFPeAPFMPA8:2FTS4:2FTS+24	348	12 detected	View
East Cherry Creek Valley Wsd	CO0103035	PFHpAPFDoAPFOSPFBAHFPO-DA+24	219	2 detected	View
Ft Collins Loveland Wd	CO0135292	PFOAPFUnA11Cl-PF3OUdSPFDAPFOS+24	232	0	View
City of Brighton	CO0101025	9Cl-PF3ONSPFTeDA6:2FTS4:2FTS8:2FTS+24	464	77 detected	View
Eagle River Wsd	CO0119802	PFOANFDHADONAPFMBAPFHxS+24	812	0	View
City of Northglenn	CO0101115	PFHpANMeFOSAANEtFOSAAPFDoA6:2FTS+24	116	0	View
Town of Erie	CO0162255	NFDHAPFPeS8:2FTSPFMPAPFPeA+24	116	0	View
City of Canon City	CO0122100	PFBANMeFOSAAPFHpAPFHxSPFNA+24	116	0	View
Clifton Wd	CO0139180	PFTeDA6:2FTS4:2FTSPFMPAPFPeA+24	116	0	View
City of Aspen	CO0149122	NEtFOSAAPFMPAPFPeAPFMBAPFEESA+24	86	0	View
Arapahoe Cnty Wwwa	CO0203002	PFTeDANMeFOSAANEtFOSAAPFTrDAPFBA+24	406	8 detected	View
Pueblo West Md Pueblo	CO0151650	PFPeS6:2FTSNFDHA8:2FTSPFMPA+24	348	0	View
Cherokee Md	CO0121125	PFHxSNFDHAPFBA6:2FTS4:2FTS+24	174	9 detected	View
City of Lafayette	CO0107473	PFDoAPFEESAPFDAPFHxSPFHpA+24	232	0	View
Town of Breckenridge	CO0159020	6:2FTSPFBAHFPO-DAPFDoAPFPeS+24	116	0	View
East Larimer County Wd	CO0135233	DONAPFUnAPFPeSNEtFOSAANMeFOSAA+24	116	0	View
Town of Firestone	CO0162476	NEtFOSAAPFHxSPFDoAPFHxAPFHpA+24	116	0	View
Widefield Wsd	CO0121900	PFPeSPFDAPFUnAPFHxAPFDoA+24	696	61 detected	View
Town of Johnstown	CO0162418	PFHpANFDHAPFTeDAPFTrDANEtFOSAA+24	116	0	View
City of Grand Junction	CO0139321	NFDHAPFEESA8:2FTSPFBAPFMBA+24	116	0	View
Little Thompson Wd	CO0135477	PFNAPFHpANMeFOSAANEtFOSAAPFTrDA+24	116	1 detected	View
City of Fountain	CO0121275	PFEESANFDHAPFPeSPFHpSPFTeDA+24	406	30 detected	View
Town of Windsor	CO0162843	DONA11Cl-PF3OUdS8:2FTS9Cl-PF3ONS4:2FTS+24	348	0	View
City of Louisville	CO0107487	PFBAPFDoAPFUnA11Cl-PF3OUdS9Cl-PF3ONS+24	232	0	View
Left Hand Wd	CO0107471	6:2FTSNFDHAPFNAPFMBAPFPeA+24	202	0	View
Security Water District	CO0121775	PFPeA9Cl-PF3ONSNEtFOSAANMeFOSAA11Cl-PF3OUdS+24	179	10 detected	View
City of Evans	CO0162260	PFHxAPFUnAPFPeANFDHAPFHpS+24	116	0	View
Mt Werner Wd	CO0154524	PFHxSPFTrDANEtFOSAAPFBSPFHpA+24	232	0	View
Woodmoor Wsd	CO0121950	PFHxSPFPeSPFDAPFOA9Cl-PF3ONS+24	406	1 detected	View
Superior Md No 1	CO0107725	PFHpSPFEESAPFOSNFDHANMeFOSAA+24	116	0	View
Town of Frederick	CO0162288	NEtFOSAANMeFOSAAPFTeDAPFTrDAHFPO-DA+24	91	0	View
Us Air Force Academy	CO0121845	PFTrDA11Cl-PF3OUdSPFHxAPFDoA4:2FTS+24	116	0	View
Town of Estes Park	CO0135257	PFHpSNFDHAPFMBAHFPO-DAPFEESA+24	232	0	View
North Weld County Wd	CO0162553	PFBAPFOA8:2FTSPFBSPFHpS+24	232	0	View
Evergreen Md	CO0130030	PFNAPFHxSPFOSPFDAPFDoA+24	116	0	View
Stonegate Md	CO0118076	PFUnA9Cl-PF3ONS4:2FTS6:2FTSPFBA+24	116	6 detected	View
Town of Gypsum	CO0119329	PFTrDAPFHxAPFUnA4:2FTSHFPO-DA+24	232	0	View
City of Black Hawk	CO0124147	PFUnAPFPeAPFPeSPFEESA8:2FTS+24	232	0	View
City of Sterling	CO0138045	PFOSPFHpAPFTeDAPFTrDANMeFOSAA+24	116	0	View
Town of Berthoud	CO0135138	PFDoAPFDAPFOS9Cl-PF3ONS11Cl-PF3OUdS+24	76	0	View
Woodmen Hills Md	CO0121930	9Cl-PF3ONSDONA11Cl-PF3OUdSPFBAPFUnA+24	149	0	View
Montezuma Wc	CO0142900	PFDoAPFDAPFBSPFOSPFHxS+24	116	0	View
Roxborough Wsd	CO0118055	8:2FTSPFMPAPFMBAPFEESA4:2FTS+24	116	0	View
Pinery Wwd	CO0118025	PFUnA11Cl-PF3OUdS9Cl-PF3ONSDONAHFPO-DA+24	406	11 detected	View
Castle Pines North Md	CO0118006	9Cl-PF3ONSPFTrDANMeFOSAAPFBSPFHpA+24	58	4 detected	View
Meridian Service Md	CO0121455	11Cl-PF3OUdSPFHxAPFOSPFPeSPFEESA+24	58	0	View
City of Ft Lupton	CO0162291	NEtFOSAAPFTrDAPFTeDANMeFOSAA9Cl-PF3ONS+24	116	0	View
Town of Severance	CO0162707	PFTrDANEtFOSAANMeFOSAAPFTeDAPFPeA+24	66	0	View
Town of Wellington	CO0135838	PFPeSPFOAPFOSNMeFOSAAPFBS+24	174	0	View
City of Federal Heights	CO0101055	DONAPFBA6:2FTS4:2FTS8:2FTS+24	174	0	View
City of Trinidad	CO0136800	NEtFOSAA8:2FTSPFHpSPFBSDONA+24	116	0	View
City of Alamosa	CO0102100	PFPeAPFDAPFOAPFUnAPFHxA+24	58	0	View
Cottonwood Wsd	CO0118020	PFHxA8:2FTS4:2FTS6:2FTSPFBA+24	174	10 detected	View
City of Steamboat Springs	CO0154725	PFEESA4:2FTS8:2FTSPFMPAPFPeA+24	116	0	View
Snake River Wd	CO0159105	9Cl-PF3ONSPFBA11Cl-PF3OUdSPFBSPFTeDA+24	116	12 detected	View
Town of Mountain Village	CO0157400	6:2FTS11Cl-PF3OUdSPFHxAPFDAPFOA+24	232	4 detected	View
St Charles Mesa Wd	CO0151750	PFHxSPFOAPFNAPFOSPFHpA+24	124	0	View
City of Gunnison	CO0126325	11Cl-PF3OUdSPFUnAPFDoANEtFOSAAPFBS+24	522	6 detected	View
City of Rifle	CO0123676	6:2FTSPFPeSPFBSPFMPAPFHxS+24	116	0	View
City of Glenwood Springs	CO0123314	PFTrDANEtFOSAANMeFOSAAPFTeDAPFPeS+24	116	0	View
Town of Milliken	CO0162511	PFOAPFHpSPFPeS6:2FTSPFBA+24	124	0	View
City of Craig	CO0141188	PFTrDANMeFOSAAPFTeDANEtFOSAANFDHA+24	116	0	View
City of Cortez	CO0142200	HFPO-DAPFHpS9Cl-PF3ONSDONAPFBA+24	66	0	View
City of Woodland Park	CO0160900	NMeFOSAANEtFOSAAPFTrDAPFTeDAHFPO-DA+24	62	0	View
Town of Silverthorne	CO0159095	4:2FTSPFHxAPFUnAPFMPA9Cl-PF3ONS+24	232	5 detected	View
Inverness Wsd	CO0203012	PFTrDAPFTeDAPFHpADONANMeFOSAA+24	306	0	View
Town of Telluride	CO0157800	PFMBAPFUnA11Cl-PF3OUdS9Cl-PF3ONSDONA+24	232	0	View
Central Weld Cnty Wd	CO0162122	NMeFOSAAPFTeDANEtFOSAAPFTrDAPFHpS+24	91	0	View
Town of Eagle	CO0119233	NFDHA8:2FTSPFMPAPFPeAPFMBA+24	232	0	View
City of Florence	CO0122500	NEtFOSAAPFTeDAPFTrDANMeFOSAAPFHpA+24	62	0	View
City of Lamar	CO0150700	PFHxSPFTrDAPFDoAPFPeA9Cl-PF3ONS+24	58	2 detected	View
Town of Eaton	CO0162233	PFPeSPFUnAPFHpSNFDHAPFMBA+24	87	0	View
Todd Creek Village Md	CO0101157	PFEESANMeFOSAANFDHAPFPeAPFMPA+24	116	22 detected	View
City of Manitou Springs	CO0121450	PFTeDANMeFOSAANEtFOSAAPFBAPFNA+24	116	0	View
City of Dacono	CO0162200	PFPeSNFDHAPFDA11Cl-PF3OUdSPFHpA+24	116	0	View
Town of Carbondale	CO0123167	NEtFOSAAPFTrDAPFTeDANMeFOSAA11Cl-PF3OUdS+24	261	0	View
Winter Park Wsd	CO0125843	PFNAPFOA11Cl-PF3OUdSNEtFOSAANMeFOSAA+24	87	0	View
Town of Lochbuie	CO0162486	PFBS11Cl-PF3OUdSPFUnAPFDoAPFDA+24	58	5 detected	View
Stratmoor Hills Wsd	CO0121800	PFTrDAPFTeDANEtFOSAANMeFOSAAPFBS+24	62	8 detected	View
Donala Wsd	CO0121175	PFOSPFHpSPFNAPFMBAPFEESA+24	232	0	View
Snowmass Village Wsd	CO0149717	9Cl-PF3ONSHFPO-DAPFBSPFHpAPFHxS+24	116	0	View
Northern Douglas County Wsd	CO0118016	PFUnADONAPFBAPFOA4:2FTS+24	116	9 detected	View
Copper Mountain Consolidated Md	CO0159030	PFTeDA8:2FTS4:2FTS6:2FTSPFBA+24	116	0	View
Town of Monument	CO0121475	NFDHAPFPeSPFHpSPFTeDANEtFOSAA+24	348	0	View
Triview Md	CO0121840	8:2FTSPFTrDAPFEESA4:2FTSPFMPA+24	29	0	View
Castle Pines Village Md	CO0118005	PFUnAPFBADONA11Cl-PF3OUdSPFMBA+24	116	0	View
Grand County Water No 1	CO0125323	PFMPAPFOAPFDAPFDoA8:2FTS+24	179	1 detected	View
Town of Limon	CO0137015	9Cl-PF3ONSPFHpANMeFOSAAPFDoAPFHxS+24	58	0	View
Town of New Castle	CO0123538	4:2FTSNMeFOSAAPFPeSPFTeDAPFTrDA+24	116	0	View
Northern Colorado Wa	CO0135554	DONAPFBA6:2FTSHFPO-DAPFMBA+24	290	0	View
City of Monte Vista	CO0153600	NMeFOSAAPFHxSHFPO-DAPFMPAPFUnA+24	174	0	View
Mid Valley Md	CO0119508	PFMPANMeFOSAAPFTrDAPFHxAPFTeDA+24	174	0	View
Menoken Wd	CO0143506	PFNAPFUnAPFHxAPFDoAPFDA+15	20	0	View
Town of Frisco	CO0159055	PFPeSPFOAPFDAPFTeDAPFUnA+24	232	0	View
Battlement Mesa Md	CO0123133	PFEESANFDHANMeFOSAANEtFOSAAPFDA+24	87	0	View
City of Yuma	CO0163020	HFPO-DAPFHpAPFHxSPFNAPFOS+24	348	0	View
West Fort Collins Wd Fort Collins	CO0135290	PFOA11Cl-PF3OUdSPFUnAPFHxAPFDoA+24	116	0	View
Park Center Wd	CO0122600	PFBAPFOSPFDA6:2FTSPFPeS+24	116	0	View
Town of Hayden	CO0154333	PFBSPFPeAPFMBAPFEESAPFMPA+24	116	0	View
Genesee Wsd	CO0130035	PFOS4:2FTS8:2FTSPFMPAPFPeA+24	113	0	View
Perry Park Wsd	CO0118045	PFMPA9Cl-PF3ONSDONAHFPO-DAPFBA+24	203	0	View
Chipeta Wd	CO0143176	PFBSPFHpSPFEESAPFHxAPFUnA+24	116	1 detected	View
Town of Buena Vista	CO0108300	PFTeDAPFBSPFHpAPFHxSPFOS+24	102	0	View
City of Central City	CO0124171	PFNANMeFOSAAPFBAPFTrDAPFHxS+24	116	0	View
Ymca Rockies Wind River	CO0135883	6:2FTSPFPeAPFNA4:2FTSPFBA+24	116	0	View
Colorado Centre Md	CO0121140	11Cl-PF3OUdSPFOAPFBA6:2FTS8:2FTS+24	29	0	View
Advenir French Quarter Denver	CO0116104	PFMBAPFHxAPFHpS8:2FTS9Cl-PF3ONS+24	116	0	View
Town of Hudson	CO0162359	PFTeDANMeFOSAAPFTrDANEtFOSAAPFBS+24	91	0	View
City of Creede	CO0140500	PFMPAPFPeAPFEESAPFPeSPFHpS+24	58	0	View
Town of Dolores	CO0142400	PFPeAPFBAPFMBAPFDoAPFMPA+24	116	0	View
Two Rivers Village	CO0119720	PFMBA9Cl-PF3ONSPFTeDAPFHpSPFBS+24	58	0	View
Ymca Snow Mtn Ranch	CO0125916	HFPO-DAPFOAPFHxAPFNA11Cl-PF3OUdS+24	116	0	View

Source: EPA UCMR 5 Occurrence Data · Methodology

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