Hunterdon County Water Quality
Hunterdon County, New Jersey: one city report built from EPA and utility records. A county has many suppliers; each city shows the system that serves it.
Highest result for each contaminant
One row per contaminant: the highest result any system in the county reported, against its limit. Open a row for the systems behind it.
Perfluorooctanesulfonic acid (PFOS)CLINTON WATER DEPT4.0 ng/L federal MCL (2024) · US EPA12.2 ng/L
- CLINTON WATER DEPT12.2 ng/LSample date: 2023-09-11 to 2024-03-20
Perfluorooctanoic acid (PFOA)CLINTON WATER DEPT4.0 ng/L federal MCL (2024) · US EPA9 ng/L
- CLINTON WATER DEPT9 ng/LSample date: 2023-09-11 to 2024-03-20
LithiumCLINTON WATER DEPT10 µg/L EPA health reference level (screening, not a legal limit) · US EPA19.3 µg/L
- CLINTON WATER DEPT19.3 µg/LSample date: 2023-09-11 to 2024-03-20
Lead (90th percentile)CLINTON WATER DEPT15 µg/L federal action level · US EPA6.8 µg/L
- CLINTON WATER DEPT6.8 µg/LMonitoring period: 2024–2026 (still open)
Perfluorobutanesulfonic acid (PFBS)CLINTON WATER DEPT2,000 ng/L EPA health advisory (screening, not a legal limit) · US EPA5.9 ng/L
- CLINTON WATER DEPT5.9 ng/LSample date: 2023-09-11 to 2024-03-20
Perfluorohexanoic acid (PFHxA)CLINTON WATER DEPT400,000 ng/L Michigan EGLE state MCL (strictest US state) · Michigan EGLE6 ng/L
- CLINTON WATER DEPT6 ng/LSample date: 2023-09-11 to 2024-03-20
Perfluoropentanoic acid (PFPeA)CLINTON WATER DEPTNo federal or state limit; shown for transparency7.8 ng/L
- CLINTON WATER DEPT7.8 ng/LSample date: 2023-09-11 to 2024-03-20
24 PFAS tested, none detected in this systemShow
Tested in this system: CLINTON WATER DEPT
- 11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS)
- 1H, 1H, 2H, 2H-perfluorodecane sulfonic acid (8:2 FTS)
- 1H, 1H, 2H, 2H-perfluorohexane sulfonic acid (4:2 FTS)
- 1H, 1H, 2H, 2H-perfluorooctane sulfonic acid (6:2 FTS)
- 4,8-Dioxa-3H-perfluorononanoic acid (ADONA)
- 9-Chlorohexadecafluoro-3-oxanone-1-sulfonic acid (9Cl-PF3ONS)
- Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals)
- N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA)
- N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA)
- Nonafluoro-3,6-dioxaheptanoic acid (NFDHA)
- Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA)
- Perfluoro-3-methoxypropanoic acid (PFMPA)
- Perfluoro-4-methoxybutanoic acid (PFMBA)
- Perfluorobutanoic acid (PFBA)
- Perfluorodecanoic acid (PFDA)
- Perfluorododecanoic acid (PFDoA)
- Perfluoroheptanesulfonic acid (PFHpS)
- Perfluoroheptanoic acid (PFHpA)
- Perfluorohexanesulfonic acid (PFHxS)
- Perfluorononanoic acid (PFNA)
- Perfluoropentanesulfonic acid (PFPeS)
- Perfluorotetradecanoic acid (PFTA)
- Perfluorotridecanoic acid (PFTrDA)
- Perfluoroundecanoic acid (PFUnA)
Cities ranked by the records
Ranked by the Purity Score of each city's main water system, highest first. Scores belong to water systems; there is no county score. The score is computed only from contaminants measured in the published EPA record, so this ranks the record, not which city's water is safest. How the score works.
0of 1 city above the 15 µg/L action level
Based on each system's 90th-percentile result. Lead from household plumbing isn't in this record.
Lead in New JerseyLargest water systems
- ClintonCLINTON WATER DEPT · NJ100500112,500 served
Frequently asked
How does Hunterdon County tap water compare across cities?
PurityMap ranks 1 city in Hunterdon County by the Purity Score of each city's main water system, computed only from contaminants measured in the published EPA record. Scores belong to water systems, not to cities. The highest published score is Clinton's main water system: CLINTON WATER DEPT · PWSID NJ1005001 · Purity Score 49 (Poor) · Confidence: moderate · Assessed at the water-system level. The ranking compares the records, not which city's water is safest, and your own tap can differ with household plumbing.
How many Hunterdon County cities had a PFAS sample above a 2024 EPA limit?
1 of 1 Hunterdon County city report had a PFAS sample above a 2024 EPA limit in EPA's UCMR 5 testing, including Clinton (PFOS 12.2 ng/L). That limit is judged on a yearly average, and water systems have until 2029 to meet it, so a single sample is not a violation. PFAS were detected at any level in 1.
Is there lead in Hunterdon County tap water?
Utilities report lead as a 90th-percentile result from home taps. 1 of 1 Hunterdon County cities reported a value above zero, and none was above the 15 µg/L federal action level. Lead usually comes from a building's own pipes and fixtures, so only a test at your tap tells you what you drink.
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