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Dover, NJ Tap Water Quality 2026

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

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

Main Utility: Dover Water Commission PWSID: NJ1409001 Updated: 2026 Q2
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PFAS above the federal limit at 2 of 2 sampling points

Lead is 2.78 ppb, 19% of the action level and no violations are open. However, PFAS exceeds the federal limit at 2 of 2 sampling points, running as high as 2.34 times the limit.

C

Dover earns a C for water quality

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

Lead: 2.78 ppb — 19% of the federal action level
PFAS above the federal limit at 2 of 2 sampling points
55 violations since 2015, 0 health-based
No violations currently open
Dover's lead level vs. all New Jersey community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: 2.78 ppb — 19% of the federal action level
✓ Lower lead than 38% of New Jersey utilities
Population Served
18428
~6654 connections
Water Source
Groundwater
Drawn from wells — SDWIS source code GW
Active Violations
0
55 since 2015, all resolved

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
19% of EPA action level
2.78 ppb
Action level: 15 ppb
The 90th-percentile lead result is 2.78 ppb, 19% of the 15 ppb federal action level. The action level is a treatment trigger, not a legal maximum, and it is measured across sampled taps rather than at any single home.

Contaminant Violations (2015–Present)

ContaminantTypeMeasuredLimitPeriodStatus
1,2,4-Trichlorobenzene MONITORING AND REPORTING — 0.07 mg/L 2026 Archived
cis-1,2-Dichloroethylene MONITORING AND REPORTING — 0.07 mg/L 2026 Archived
Xylenes, Total MONITORING AND REPORTING — 10 mg/L 2026 Archived
DICHLOROMETHANE MONITORING AND REPORTING — 0.005 mg/L 2026 Archived
o-Dichlorobenzene MONITORING AND REPORTING — 0.6 mg/L 2026 Archived
p-Dichlorobenzene MONITORING AND REPORTING — 0.075 mg/L 2026 Archived
Vinyl chloride MONITORING AND REPORTING — 0.002 mg/L 2026 Archived
1,1-Dichloroethylene MONITORING AND REPORTING — 0.007 mg/L 2026 Archived
trans-1,2-Dichloroethylene MONITORING AND REPORTING — 0.1 mg/L 2026 Archived
1,2-Dichloroethane MONITORING AND REPORTING — 0.005 mg/L 2026 Archived
1,1,1-Trichloroethane MONITORING AND REPORTING — 0.2 mg/L 2026 Archived
Carbon tetrachloride MONITORING AND REPORTING — 0.005 mg/L 2026 Archived
1,2-Dichloropropane MONITORING AND REPORTING — 0.005 mg/L 2026 Archived
Trichloroethylene MONITORING AND REPORTING — 0.005 mg/L 2026 Archived
1,1,2-Trichloroethane MONITORING AND REPORTING — 0.005 mg/L 2026 Archived
Tetrachloroethylene MONITORING AND REPORTING — 0.005 mg/L 2026 Archived
CHLOROBENZENE MONITORING AND REPORTING — 0.1 mg/L 2026 Archived
Benzene MONITORING AND REPORTING — 0.005 mg/L 2026 Archived
Toluene MONITORING AND REPORTING — 1 mg/L 2026 Archived
Ethylbenzene MONITORING AND REPORTING — 0.7 mg/L 2026 Archived
Styrene MONITORING AND REPORTING — 0.1 mg/L 2026 Archived
1,2,4-Trichlorobenzene MONITORING AND REPORTING — 0.07 mg/L 2026 Archived
cis-1,2-Dichloroethylene MONITORING AND REPORTING — 0.07 mg/L 2026 Archived
Xylenes, Total MONITORING AND REPORTING — 10 mg/L 2026 Archived
DICHLOROMETHANE MONITORING AND REPORTING — 0.005 mg/L 2026 Archived
o-Dichlorobenzene MONITORING AND REPORTING — 0.6 mg/L 2026 Archived
p-Dichlorobenzene MONITORING AND REPORTING — 0.075 mg/L 2026 Archived
Vinyl chloride MONITORING AND REPORTING — 0.002 mg/L 2026 Archived
1,1-Dichloroethylene MONITORING AND REPORTING — 0.007 mg/L 2026 Archived
trans-1,2-Dichloroethylene MONITORING AND REPORTING — 0.1 mg/L 2026 Archived
1,2-Dichloroethane MONITORING AND REPORTING — 0.005 mg/L 2026 Archived
1,1,1-Trichloroethane MONITORING AND REPORTING — 0.2 mg/L 2026 Archived
Carbon tetrachloride MONITORING AND REPORTING — 0.005 mg/L 2026 Archived
1,2-Dichloropropane MONITORING AND REPORTING — 0.005 mg/L 2026 Archived
Trichloroethylene MONITORING AND REPORTING — 0.005 mg/L 2026 Archived
1,1,2-Trichloroethane MONITORING AND REPORTING — 0.005 mg/L 2026 Archived
Tetrachloroethylene MONITORING AND REPORTING — 0.005 mg/L 2026 Archived
CHLOROBENZENE MONITORING AND REPORTING — 0.1 mg/L 2026 Archived
Benzene MONITORING AND REPORTING — 0.005 mg/L 2026 Archived
Toluene MONITORING AND REPORTING — 1 mg/L 2026 Archived
Ethylbenzene MONITORING AND REPORTING — 0.7 mg/L 2026 Archived
Styrene MONITORING AND REPORTING — 0.1 mg/L 2026 Archived
Revised Total Coliform Rule REPORTING FAILURE — — 2025 Unaddressed
Consumer Confidence Rule OTHER — — 2025 Unaddressed
Revised Total Coliform Rule MONITORING FAILURE — — 2025 Archived
TTHM MONITORING AND REPORTING — 0.080 mg/L 2025 Archived
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2025 Archived
Consumer Confidence Rule OTHER — — 2025 Unaddressed
E. COLI MONITORING AND REPORTING — 0 2024 Resolved
Revised Total Coliform Rule REPORTING FAILURE — — 2024 Unaddressed
Revised Total Coliform Rule MONITORING FAILURE — — 2024 Archived
Gross Alpha, Excl. Radon and U MONITORING AND REPORTING — 15 pCi/L 2023–2025 Archived
Radium-228 MONITORING AND REPORTING — — 2017–2019 Resolved
Combined Radium (-226 and -228) MONITORING AND REPORTING — 5 pCi/L 2017–2019 Resolved
Consumer Confidence Rule OTHER — — 2015 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

55 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 Dover Water Commission
PWSID NJ1409001
Water source Groundwater — Drawn from wells — SDWIS source code GW
Population served 18,428
Service connections 6,654
Systems serving this area 4
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Dover tap water safe to drink? ▼
It meets most federal standards, but PFAS exceeds the federal limit at 2 of 2 sampling points. No violations are currently open. Lead is 2.78 ppb, 19% of the action level.
Does Dover water have PFAS? ▼
Yes. PFAS exceeds the federal limit at 2 of 2 sampling points, running as high as 2.34 times the limit. Limits are enforced on a running annual average at each sampling point, not on a single sample.
Who supplies water to Dover? ▼
Dover Water Commission (PWSID NJ1409001), one of 4 systems serving this area. Groundwater. Drawn from wells — SDWIS source code GW
When was this system last inspected? ▼
It was last inspected on 2025-10-09. No significant deficiencies were recorded.

What Should Dover 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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