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Chesterfield, NJ Tap Water Quality 2026

Water quality report for Chesterfield, NJ — PFAS, lead and copper results, violation history and state inspection findings from EPA SDWIS.

A look at Chesterfield's drinking water using EPA enforcement records: violations, lead and copper results, PFAS sampling and state inspection findings.

Main Utility: Aqua Nj - Hamilton Square PWSID: NJ1103001 Updated: 2026 Q2
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PFAS above the federal limit at 3 of 4 sampling points

Lead was not detected and no violations are open. However, PFAS exceeds the federal limit at 3 of 4 sampling points, running as high as 2.84 times the limit.

C

Chesterfield earns a C for water quality

Graded on violations, lead, and PFAS, with state inspection findings.

Lead: not detected
PFAS above the federal limit at 3 of 4 sampling points
22 violations since 2015, 0 health-based
No violations currently open
Chesterfield's lead level vs. all New Jersey community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: Not detected — 0% of the federal action level
✓ Lower lead than % of New Jersey utilities
Population Served
4993
~12738 connections
Water Source
Surface water
Purchased from another system — SDWIS source code SWP
Active Violations
0
22 since 2015, all resolved

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
0% of EPA action level
Not detected
Action level: 15 ppb
Lead was not detected at the 90th percentile — the result fell below the laboratory detection limit. That is not the same as an absence of lead in every tap, and older homes with lead service lines can still show higher readings.

Contaminant Violations (2015–Present)

ContaminantTypeMeasuredLimitPeriodStatus
Lead and Copper Rule MONITORING AND REPORTING — TT 2024 Archived
Gross Alpha, Excl. Radon and U MONITORING AND REPORTING — 15 pCi/L 2024 Archived
Combined Uranium MONITORING AND REPORTING — 30 ug/L 2024 Archived
Combined Radium (-226 and -228) MONITORING AND REPORTING — 5 pCi/L 2024 Archived
Radium-226 MONITORING AND REPORTING — — 2024 Archived
Radium-228 MONITORING AND REPORTING — — 2024 Archived
Lead and Copper Rule MONITORING AND REPORTING — TT 2023 Unaddressed
E. COLI MONITORING AND REPORTING — 0 2023 Unaddressed
Gross Alpha, Excl. Radon and U MONITORING AND REPORTING — 15 pCi/L 2023 Resolved
Combined Uranium MONITORING AND REPORTING — 30 ug/L 2023 Resolved
Combined Radium (-226 and -228) MONITORING AND REPORTING — 5 pCi/L 2023 Resolved
Radium-226 MONITORING AND REPORTING — — 2023 Resolved
Radium-228 MONITORING AND REPORTING — — 2023 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2023 Archived
Nitrate MONITORING AND REPORTING — 10 mg/L 2023 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2021 Resolved
Revised Total Coliform Rule REPORTING FAILURE — — 2019 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2019 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2019 Resolved
Combined Uranium MONITORING AND REPORTING — 30 ug/L 2016 Resolved
Combined Radium (-226 and -228) MONITORING AND REPORTING — 5 pCi/L 2016 Resolved
Gross Alpha, Excl. Radon and U MONITORING AND REPORTING — 15 pCi/L 2016 Resolved
Understanding violation types MCL violations mean a contaminant exceeded the federal maximum limit — the most serious type.
TT (Treatment Technique) violations mean required treatment procedures weren't followed, but don't necessarily mean contamination occurred.

Violation History

22 violations are on record since 2015, of which 0 were health-based. All have been resolved and none remain open.

About the Main Water System

Utility Aqua Nj - Hamilton Square
PWSID NJ1103001
Water source Surface water — Purchased from another system — SDWIS source code SWP
Population served 4,993
Service connections 12,738
Systems serving this area 4
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Chesterfield tap water safe to drink? ▼
It meets most federal standards, but PFAS exceeds the federal limit at 3 of 4 sampling points. No violations are currently open.
Does Chesterfield water have PFAS? ▼
Yes. PFAS exceeds the federal limit at 3 of 4 sampling points, running as high as 2.84 times the limit. Limits are enforced on a running annual average at each sampling point, not on a single sample.
Who supplies water to Chesterfield? ▼
Aqua Nj - Hamilton Square (PWSID NJ1103001), one of 4 systems serving this area. Surface water. Purchased from another system — SDWIS source code SWP
When was this system last inspected? ▼
It was last inspected on 2022-10-05. No significant deficiencies were recorded.

What Should Chesterfield Residents Do?

1
Consider a reverse-osmosis filter
Reverse osmosis removes more than 95% of PFAS. Standard carbon pitchers do not.
2
Check for a lead service line
Lead reaches tap water mainly through service lines and household plumbing. Suppliers now publish an inventory identifying lead lines.
3
Flush before drinking
If water has sat in pipes more than six hours, run the cold tap for two minutes before drinking or cooking.

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