Official PFAS Records

Colorado PFAS Watchlist

Official EPA UCMR 5 PFAS monitoring records for public water systems in Colorado. 36 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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Systems with records

424

Total records

424

Official detections

Water System	PWSID	Analytes in records	Records	Detections
City of Aurora	CO0103005	PFBSPFHxAPFBAPFPeA	4	4 detected	View
City of Thornton Thornton	CO0101150	PFHxAPFBAPFBSPFPeAPFHpA+3	35	35 detected	View
Town of Castle Rock	CO0118010	PFPeAPFBA	3	3 detected	View
Highlands Ranch Wsd Highlands Ranch	CO0118015	PFBAPFBSPFPeAPFHxA	10	10 detected	View
Consolidated Mutual Maple Grove	CO0130020	PFHxAPFBSPFPeA	3	3 detected	View
Parker Wsd	CO0118040	PFPeAPFBSPFHxAPFBAPFOA	28	28 detected	View
South Adams County Wsd	CO0101140	PFPeAPFBAPFHxA	12	12 detected	View
East Cherry Creek Valley Wsd	CO0103035	PFBAPFPeA	3	3 detected	View
City of Englewood	CO0103045	PFBSPFPeAPFHxAPFOAPFBA	11	11 detected	View
City of Brighton	CO0101025	PFPeAPFBAPFHxAPFBSPFOA+2	77	77 detected	View
Arapahoe Cnty Wwwa	CO0203002	PFPeAPFBSPFHxAPFBAPFOA	8	8 detected	View
Cherokee Md	CO0121125	PFBSPFPeAPFOAPFHxA	9	9 detected	View
Widefield Wsd	CO0121900	PFPeAPFHxAPFBAPFHxSPFBS+3	61	61 detected	View
Little Thompson Wd	CO0135477	PFOA	1	1 detected	View
City of Fountain	CO0121275	PFHxAPFPeAPFBA	30	30 detected	View
Security Water District	CO0121775	PFPeAPFHxAPFBA	10	10 detected	View
Woodmoor Wsd	CO0121950	PFBS	1	1 detected	View
Stonegate Md	CO0118076	PFOAPFHxAPFPeAPFBSPFHpA+1	6	6 detected	View
Pinery Wwd	CO0118025	PFBSPFPeAPFBAPFHxA	11	11 detected	View
Castle Pines North Md	CO0118006	PFBSPFPeAPFBAPFHxA	4	4 detected	View
Cottonwood Wsd	CO0118020	PFHxAPFOAPFPeAPFBSPFBA	10	10 detected	View
Snake River Wd	CO0159105	PFHpAPFHxSPFBSPFOAPFPeA+2	12	12 detected	View
Town of Morrison	CO0130085	PFHxAPFBS	5	5 detected	View
Town of Mountain Village	CO0157400	PFOSPFHxS	4	4 detected	View
City of Gunnison	CO0126325	PFOSPFBSPFPeAPFHxA	6	6 detected	View
City of Delta	CO0115205	PFBA	1	1 detected	View
Town of Silverthorne	CO0159095	PFHxSPFBS	5	5 detected	View
Inverness Wsd	CO0203012	PFBA	1	1 detected	View
City of Lamar	CO0150700	PFHxSPFBS	2	2 detected	View
Todd Creek Village Md	CO0101157	PFHxAPFPeAPFOSPFBSPFHxS+1	22	22 detected	View
Town of Lochbuie	CO0162486	PFHxAPFHxSPFPeAPFBS	5	5 detected	View
Stratmoor Hills Wsd	CO0121800	PFHpAPFHxAPFPeAPFBA	8	8 detected	View
Northern Douglas County Wsd	CO0118016	PFBAPFPeAPFBSPFHxA	9	9 detected	View
Grand County Water No 1	CO0125323	PFBA	1	1 detected	View
City of Rocky Ford	CO0145600	PFHxSPFBSPFOS	5	5 detected	View
Chipeta Wd	CO0143176	PFBA	1	1 detected	View

Source: EPA UCMR 5 Occurrence Data · Methodology

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