Every West Virginia public water system that reported a PFAS detection during EPA UCMR 5 monitoring, how many sit above the 2024 federal limits, and the standard West Virginia applies. Concentrations are in nanograms per litre, the same unit as parts per trillion.
This is the United States view of the North American PFAS dataset. The complete dataset, including all 3,452 US systems and 97 Canadian sites, lives on the main PFAS contamination map.
Federal EPA limit applies
WV DEP follows federal MCL; Parkersburg (DuPont Washington Works) is the origin of the US PFOA story.
Compound
Limit (ng/L)
Note
PFOA
4
PFOS
4
PFHxS
10
PFNA
10
HFPO-DA (GenX)
10
Mixture
Not numeric
Hazard Index ≤ 1 (PFHxS, PFNA, HFPO-DA, PFBS)
US EPA, PFAS National Primary Drinking Water Regulation (2024)
US EPA PFAS National Primary Drinking Water Regulation (2024)
Last reviewed 2026-08-13. Verify against the agency source before making a compliance or remediation decision.
Full West Virginia regulatory brief
Ranked by how far the worst single compound sits above its 2024 federal limit. Values are the maximum each system reported during its UCMR 5 monitoring period.
Water system
PWSID
Worst compound
Max ng/L
Times the limit
Lubeck Psd
WV3305404
PFOA
179.5
44.9x
New Martinsville
WV3305203
PFOS
121.8
30.4x
Parkersburg Utility Board
WV3305407
PFOA
46.5
11.6x
Williamstown Water Dept
WV3305412
PFOA
32
8.0x
Walnut Grove Utilities
WV3301942
PFOS
17.3
4.3x
Mineral Wells Psd
WV3305405
PFOA
13.2
3.3x
Mountaineer Park Inc
WV3301520
PFOA
12.2
3.0x
Pennsboro
WV3304306
PFOA
11.7
2.9x
Claywood Park Psd
WV3305402
PFOA
11.1
2.8x
Pleasants Co Psd
WV3303707
PFOA
11
2.8x
Weirton Area Water Board
WV3300516
PFOS
8.2
2.0x
Union Williams P S D
WV3305410
PFOA
5.8
1.4x
Southern Jackson County P S D
WV3301817
PFOA
5.3
1.3x
Ripley City Of
WV3301811
PFOA
5.1
1.3x
Bridgeport City Of
WV3301703
PFOA
5
1.3x
Greater Harrison Psd Lost Creek Mt Clare
WV3301713
PFOA
4.8
1.2x
Ravenswood Municipal Water Works
WV3301810
PFOA
4.8
1.2x
Wellsburg, City Of
WV3300517
PFOA
4.6
1.1x
Shortline Psd
WV3301722
PFOA
4.5
1.1x
Lavalette Psd
WV3305006
PFOA
4.4
1.1x
Open the full map and filter West Virginia pins
Every count above is read straight from a published government file. Nothing is modelled, averaged, or estimated. The rules below are the exact rules used to produce the figures for West Virginia.
Who is in UCMR 5. All public water systems serving more than 3,300 people, plus a national sample of 800 smaller systems. Private wells and most small systems are not monitored, so they cannot appear here.
Which systems are listed. Only systems whose state field is WV and that reported at least one measured PFAS detection. Systems that monitored and found nothing are not shown, and their absence is not evidence of contamination. That gives 33 systems in West Virginia.
Systems that cannot be placed. 87 systems nationally reported a detection but have no serviced ZIP code published by EPA, so they carry no location and are excluded from these counts. National totals on the map page include them.
Which value is used. The highest result a system reported for each compound across its sampling events. Results flagged by EPA as non-detects are excluded, as are the lithium results carried in the same file.
The above a limit count. A system is counted when its maximum result for a compound exceeds the 2024 federal Maximum Contaminant Level: 4 ng/L for PFOA and PFOS, 10 ng/L for PFHxS, PFNA, and HFPO-DA. That is 21 systems in West Virginia.
The Hazard Index count. Calculated with EPA's own mixture method for PFHxS, PFNA, HFPO-DA, and PFBS. A system is counted when the index is above 1. That is 3 systems in West Virginia.
What monitoring data is not. Exceeding a 2024 limit in this dataset is not a compliance violation. The federal limits carry a 2029 compliance date, which EPA proposed on 18 May 2026 to move to 2031 for PFOA and PFOS in a rule that is not final, and treatment may have been installed since the sample was taken.
If any figure on this page does not match its source file, tell Nelson and it will be corrected or removed.
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