ZIP Code 07430
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.
15
PFAS Detected
4
Above EPA Limits
2
Water Systems
340%
Highest % of MCL
Compounds Exceeding EPA Limits
PFOA Exceeds EPA limit
0 ppt MCL: 4 ppt 313% of limit
Detected: 12.50 ppt
PFOS Exceeds EPA limit
0 ppt MCL: 4 ppt 113% of limit
Detected: 4.50 ppt
MAHWAH WATER DEPARTMENT
NJ0233001 High RiskWater Type
Surface Water
PFAS Detected
8
Above MCL
2
State
New Jersey
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFOA Perfluorooctanoic acid | 12.50ppt | 313% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFOS Perfluorooctane sulfonic acid | 4.50ppt | 113% of limit
| 4 ppt | ⚠ Exceeds MCL |
lithium | 33100.00ppt | No federal limit | — | Unregulated |
PFHxA Perfluorohexanoic acid | 6.10ppt | No federal limit | — | Unregulated |
PFPeA Perfluoropentanoic acid | 6.10ppt | No federal limit | — | Unregulated |
PFBA Perfluorobutanoic acid | 6.00ppt | No federal limit | — | Unregulated |
PFBS Perfluorobutane sulfonic acid | 4.10ppt | No federal limit | — | Unregulated |
PFHpA Perfluoroheptanoic acid | 3.90ppt | No federal limit | — | Unregulated |
RAMSEY WATER DEPT
NJ0248001 High RiskWater Type
Groundwater
PFAS Detected
7
Above MCL
2
State
New Jersey
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFOA Perfluorooctanoic acid | 13.60ppt | 340% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFOS Perfluorooctane sulfonic acid | 5.30ppt | 133% of limit
| 4 ppt | ⚠ Exceeds MCL |
lithium | 12700.00ppt | No federal limit | — | Unregulated |
PFHxA Perfluorohexanoic acid | 5.40ppt | No federal limit | — | Unregulated |
PFPeA Perfluoropentanoic acid | 5.20ppt | No federal limit | — | Unregulated |
PFBS Perfluorobutane sulfonic acid | 3.60ppt | No federal limit | — | Unregulated |
PFHpA Perfluoroheptanoic acid | 3.50ppt | No federal limit | — | Unregulated |
Note: ZIP code 07430 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.