ZIP Code 17055
High RiskPFAS above EPA limits detected
4 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.
10
PFAS Detected
4
Above EPA Limits
2
Water Systems
285%
Highest % of MCL
Compounds Exceeding EPA Limits
PFOS Exceeds EPA limit
0 ppt MCL: 4 ppt 285% of limit
Detected: 11.40 ppt
PFOA Exceeds EPA limit
0 ppt MCL: 4 ppt 178% of limit
Detected: 7.10 ppt
SUEZ MECHANICSBURG
PA7210028 High RiskWater Type
Groundwater
PFAS Detected
6
Above MCL
2
State
Pennsylvania
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFOS Perfluorooctane sulfonic acid | 11.40ppt | 285% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFOA Perfluorooctanoic acid | 7.10ppt | 178% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFPeA Perfluoropentanoic acid | 8.10ppt | No federal limit | — | Unregulated |
PFHxA Perfluorohexanoic acid | 6.90ppt | No federal limit | — | Unregulated |
PFBS Perfluorobutane sulfonic acid | 5.70ppt | No federal limit | — | Unregulated |
PFHpA Perfluoroheptanoic acid | 3.60ppt | No federal limit | — | Unregulated |
PA AMERICAN WATER CO WEST
PA7210029 High RiskWater Type
Surface Water
PFAS Detected
4
Above MCL
2
State
Pennsylvania
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFOS Perfluorooctane sulfonic acid | 10.40ppt | 260% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFOA Perfluorooctanoic acid | 4.90ppt | 123% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFPeA Perfluoropentanoic acid | 3.40ppt | No federal limit | — | Unregulated |
PFBS Perfluorobutane sulfonic acid | 3.20ppt | No federal limit | — | Unregulated |
Note: ZIP code 17055 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.