ZIP Code 15143
Moderate5
PFAS Detected
0
Above EPA Limits
1
Water System
33%
Highest % of MCL
SEWICKLEY BORO WATER AUTH
PA5020050 ModerateWater Type
Groundwater
PFAS Detected
5
Above MCL
0
State
Pennsylvania
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFHxS Perfluorohexane sulfonic acid | 3.30ppt | 33% of limit
| 10 ppt | Below limit |
PFPeA Perfluoropentanoic acid | 12.00ppt | No federal limit | — | Unregulated |
PFHxA Perfluorohexanoic acid | 7.80ppt | No federal limit | — | Unregulated |
PFBA Perfluorobutanoic acid | 6.60ppt | No federal limit | — | Unregulated |
PFBS Perfluorobutane sulfonic acid | 5.70ppt | No federal limit | — | Unregulated |
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.