ZIP Code 18951
High RiskPFAS above EPA limits detected
5 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.
20
PFAS Detected
5
Above EPA Limits
3
Water Systems
358%
Highest % of MCL
Compounds Exceeding EPA Limits
PFOS Exceeds EPA limit
0 ppt MCL: 4 ppt 358% of limit
Detected: 14.30 ppt
PFOA Exceeds EPA limit
0 ppt MCL: 4 ppt 270% of limit
Detected: 10.80 ppt
PFNA Exceeds EPA limit
0 ppt MCL: 10 ppt 240% of limit
Detected: 24.00 ppt
QUAKERTOWN BORO
PA1090082 High RiskWater Type
Groundwater
PFAS Detected
9
Above MCL
3
State
Pennsylvania
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFOS Perfluorooctane sulfonic acid | 14.30ppt | 358% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFOA Perfluorooctanoic acid | 10.80ppt | 270% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFNA Perfluorononanoic acid | 24.00ppt | 240% of limit
| 10 ppt | ⚠ Exceeds MCL |
PFHxS Perfluorohexane sulfonic acid | 3.10ppt | 31% of limit
| 10 ppt | Below limit |
lithium | 80400.00ppt | No federal limit | — | Unregulated |
PFPeA Perfluoropentanoic acid | 8.30ppt | No federal limit | — | Unregulated |
PFBA Perfluorobutanoic acid | 7.10ppt | No federal limit | — | Unregulated |
PFBS Perfluorobutane sulfonic acid | 6.80ppt | No federal limit | — | Unregulated |
Show 1 more compound detected at low levels
| PFHxAPerfluorohexanoic acid | 6.10 ppt | No federal limit |
MILFORD TWP WATER AUTHORITY
PA1090125 Low LevelWater Type
Groundwater
PFAS Detected
3
Above MCL
0
State
Pennsylvania
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFHxS Perfluorohexane sulfonic acid | 3.10ppt | 31% of limit
| 10 ppt | Below limit |
lithium | 27300.00ppt | No federal limit | — | Unregulated |
PFBS Perfluorobutane sulfonic acid | 3.40ppt | No federal limit | — | Unregulated |
RICHLAND TWP WATER AUTHORITY
PA1090131 High RiskWater Type
Groundwater
PFAS Detected
8
Above MCL
2
State
Pennsylvania
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFOS Perfluorooctane sulfonic acid | 8.30ppt | 208% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFOA Perfluorooctanoic acid | 7.10ppt | 178% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFNA Perfluorononanoic acid | 5.10ppt | 51% of limit
| 10 ppt | Below limit |
lithium | 68600.00ppt | No federal limit | — | Unregulated |
PFBS Perfluorobutane sulfonic acid | 9.70ppt | No federal limit | — | Unregulated |
PFBA Perfluorobutanoic acid | 6.10ppt | No federal limit | — | Unregulated |
PFPeA Perfluoropentanoic acid | 4.60ppt | No federal limit | — | Unregulated |
PFHxA Perfluorohexanoic acid | 4.00ppt | No federal limit | — | Unregulated |
Note: ZIP code 18951 is served by 3 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.