ZIP Code 26187
High RiskPFAS above EPA limits detected
3 compounds exceed EPA Maximum Contaminant Levels in water serving this ZIP code. Standard pitcher filters like Brita do not remove PFAS. See filter recommendations below.
8
PFAS Detected
3
Above EPA Limits
2
Water Systems
800%
Highest % of MCL
Compounds Exceeding EPA Limits
PFOA Exceeds EPA limit
0 ppt MCL: 4 ppt 145% of limit
Detected: 5.80 ppt
PFHxS Exceeds EPA limit
0 ppt MCL: 10 ppt 313% of limit
Detected: 31.30 ppt
UNION WILLIAMS P S D
WV3305410 High RiskWater Type
Groundwater
PFAS Detected
1
Above MCL
1
State
West Virginia
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFOA Perfluorooctanoic acid | 5.80ppt | 145% of limit
| 4 ppt | ⚠ Exceeds MCL |
WILLIAMSTOWN WATER DEPT
WV3305412 High RiskWater Type
Groundwater
PFAS Detected
7
Above MCL
2
State
West Virginia
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFOA Perfluorooctanoic acid | 32.00ppt | 800% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFHxS Perfluorohexane sulfonic acid | 31.30ppt | 313% of limit
| 10 ppt | ⚠ Exceeds MCL |
PFBS Perfluorobutane sulfonic acid | 9.40ppt | No federal limit | — | Unregulated |
PFHxA Perfluorohexanoic acid | 9.10ppt | No federal limit | — | Unregulated |
PFBA Perfluorobutanoic acid | 6.00ppt | No federal limit | — | Unregulated |
PFHpA Perfluoroheptanoic acid | 3.90ppt | No federal limit | — | Unregulated |
PFPeA Perfluoropentanoic acid | 3.50ppt | No federal limit | — | Unregulated |
Note: ZIP code 26187 is served by 2 separate water utilities.
Results above show data for each system independently.
Data source: EPA Unregulated Contaminant Monitoring Rule, 5th cycle (UCMR 5) — January 2026 release.
UCMR 5 tested ~10,000 public water systems serving more than 25 people between 2023-2025 for 29 PFAS compounds.
Detection values represent the highest single-sample result measured at entry points to the distribution system.