ZIP Code 18974
High RiskPFAS above EPA limits detected
9 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.
38
PFAS Detected
9
Above EPA Limits
5
Water Systems
575%
Highest % of MCL
Compounds Exceeding EPA Limits
PFOA Exceeds EPA limit
0 ppt MCL: 4 ppt 183% of limit
Detected: 7.30 ppt
PFOS Exceeds EPA limit
0 ppt MCL: 4 ppt 173% of limit
Detected: 6.90 ppt
PFNA Exceeds EPA limit
0 ppt MCL: 10 ppt 120% of limit
Detected: 12.00 ppt
WARMINSTER MUNICIPAL AUTHORITY
PA1090069 Low LevelWater Type
Groundwater
PFAS Detected
2
Above MCL
0
State
Pennsylvania
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFPeA Perfluoropentanoic acid | 28.50ppt | No federal limit | — | Unregulated |
PFBA Perfluorobutanoic acid | 16.20ppt | No federal limit | — | Unregulated |
BCWSA MAIN LOWER SOUTH
PA1090079 High RiskWater Type
MX
PFAS Detected
8
Above MCL
2
State
Pennsylvania
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFOA Perfluorooctanoic acid | 7.30ppt | 183% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFOS Perfluorooctane sulfonic acid | 6.90ppt | 173% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFHxS Perfluorohexane sulfonic acid | 4.80ppt | 48% of limit
| 10 ppt | Below limit |
PFPeA Perfluoropentanoic acid | 19.00ppt | No federal limit | — | Unregulated |
PFHxA Perfluorohexanoic acid | 11.50ppt | No federal limit | — | Unregulated |
PFBA Perfluorobutanoic acid | 7.50ppt | No federal limit | — | Unregulated |
PFBS Perfluorobutane sulfonic acid | 5.60ppt | No federal limit | — | Unregulated |
PFHpA Perfluoroheptanoic acid | 3.20ppt | No federal limit | — | Unregulated |
NORTHAMPTON BUCKS CO MUN AUTH
PA1090089 High RiskWater Type
Groundwater
PFAS Detected
10
Above MCL
2
State
Pennsylvania
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFOS Perfluorooctane sulfonic acid | 23.00ppt | 575% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFOA Perfluorooctanoic acid | 19.60ppt | 490% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFHxS Perfluorohexane sulfonic acid | 5.50ppt | 55% of limit
| 10 ppt | Below limit |
PFNA Perfluorononanoic acid | 4.30ppt | 43% of limit
| 10 ppt | Below limit |
lithium | 19200.00ppt | No federal limit | — | Unregulated |
PFPeA Perfluoropentanoic acid | 20.60ppt | No federal limit | — | Unregulated |
PFHxA Perfluorohexanoic acid | 17.50ppt | No federal limit | — | Unregulated |
PFBS Perfluorobutane sulfonic acid | 14.90ppt | No federal limit | — | Unregulated |
Show 2 more compounds detected at low levels
| PFHpAPerfluoroheptanoic acid | 8.60 ppt | No federal limit |
| PFBAPerfluorobutanoic acid | 8.10 ppt | No federal limit |
WARWICK TWP WATER & SEWER AUTH
PA1090127 High RiskWater Type
Surface Water
PFAS Detected
8
Above MCL
2
State
Pennsylvania
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFOA Perfluorooctanoic acid | 7.60ppt | 190% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFOS Perfluorooctane sulfonic acid | 7.10ppt | 178% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFHxS Perfluorohexane sulfonic acid | 5.30ppt | 53% of limit
| 10 ppt | Below limit |
PFPeA Perfluoropentanoic acid | 17.20ppt | No federal limit | — | Unregulated |
PFHxA Perfluorohexanoic acid | 11.50ppt | No federal limit | — | Unregulated |
PFBA Perfluorobutanoic acid | 7.80ppt | No federal limit | — | Unregulated |
PFBS Perfluorobutane sulfonic acid | 5.30ppt | No federal limit | — | Unregulated |
PFHpA Perfluoroheptanoic acid | 3.40ppt | No federal limit | — | Unregulated |
AQUA PA MAIN SYSTEM
PA1460073 High RiskWater Type
Surface Water
PFAS Detected
10
Above MCL
3
State
Pennsylvania
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFOA Perfluorooctanoic acid | 12.60ppt | 315% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFOS Perfluorooctane sulfonic acid | 9.20ppt | 230% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFNA Perfluorononanoic acid | 12.00ppt | 120% of limit
| 10 ppt | ⚠ Exceeds MCL |
PFHxS Perfluorohexane sulfonic acid | 7.70ppt | 77% of limit
| 10 ppt | Below limit |
lithium | 15700.00ppt | No federal limit | — | Unregulated |
PFPeA Perfluoropentanoic acid | 21.80ppt | No federal limit | — | Unregulated |
PFHxA Perfluorohexanoic acid | 17.20ppt | No federal limit | — | Unregulated |
PFBA Perfluorobutanoic acid | 10.10ppt | No federal limit | — | Unregulated |
Show 2 more compounds detected at low levels
| PFBSPerfluorobutane sulfonic acid | 9.50 ppt | No federal limit |
| PFHpAPerfluoroheptanoic acid | 6.90 ppt | No federal limit |
Note: ZIP code 18974 is served by 5 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.