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Hamden, OH Tap Water Quality 2026

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

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

Main Utility: Hamden Village Pws PWSID: OH8200003 Updated: 2026 Q2
✅

No federal limits exceeded on record

Lead is 0.50 ppb, 3% of the action level and no violations are open. PFAS has never been sampled at this system.

B

Hamden earns a B for water quality

Graded on violations and lead, with state inspection findings. PFAS not tested.

Lead: 0.50 ppb — 3% of the federal action level
PFAS never sampled at this system
26 violations since 2015, 21 health-based
No violations currently open
Hamden's lead level vs. all Ohio community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: 0.50 ppb — 3% of the federal action level
✓ Lower lead than 99% of Ohio utilities
Population Served
645
~425 connections
Water Source
Groundwater
Purchased groundwater from another system — SDWIS source code GWP
Active Violations
0
26 since 2015, all resolved

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
3% of EPA action level
0.50 ppb
Action level: 15 ppb
The 90th-percentile lead result is 0.50 ppb, 3% 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
Consumer Confidence Rule OTHER — — 2026 Unaddressed
Consumer Confidence Rule OTHER — — 2022 Unaddressed
Consumer Confidence Rule OTHER — — 2021 Unaddressed
Consumer Confidence Rule OTHER — — 2020 Unaddressed
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.06153 MG/L 0.060 mg/L 2019 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.063 MG/L 0.060 mg/L 2019 Resolved
Consumer Confidence Rule OTHER — — 2018 Unaddressed
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.064 MG/L 0.060 mg/L 2018 Resolved
TTHM MCL EXCEEDANCE 0.082 MG/L 0.080 mg/L 2018 Resolved
TTHM MCL EXCEEDANCE 0.089 MG/L 0.080 mg/L 2018 Resolved
TTHM MCL EXCEEDANCE 0.09 MG/L 0.080 mg/L 2017 Resolved
TTHM MCL EXCEEDANCE 0.092 MG/L 0.080 mg/L 2017 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.064 MG/L 0.060 mg/L 2017 Resolved
TTHM MCL EXCEEDANCE 0.084 MG/L 0.080 mg/L 2017 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.067 MG/L 0.060 mg/L 2017 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.066 MG/L 0.060 mg/L 2017 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.066 MG/L 0.060 mg/L 2016 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.063 MG/L 0.060 mg/L 2016 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.061 MG/L 0.060 mg/L 2016 Resolved
TTHM MCL EXCEEDANCE 0.085 MG/L 0.080 mg/L 2016 Resolved
TTHM MCL EXCEEDANCE 0.089 MG/L 0.080 mg/L 2016 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.067 MG/L 0.060 mg/L 2016 Resolved
TTHM MCL EXCEEDANCE 0.087 MG/L 0.080 mg/L 2015 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.065 MG/L 0.060 mg/L 2015 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.065 MG/L 0.060 mg/L 2015 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.061 MG/L 0.060 mg/L 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

26 violations are on record since 2015, of which 21 were health-based. All have been resolved and none remain open.

About the Main Water System

Utility Hamden Village Pws
PWSID OH8200003
Water source Groundwater — Purchased groundwater from another system — SDWIS source code GWP
Population served 645
Service connections 425
Systems serving this area 2
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Hamden tap water safe to drink? ▼
No federal limit is exceeded on record. No violations are currently open. Lead is 0.50 ppb, 3% of the action level.
Does Hamden water have PFAS? ▼
This system has never been sampled for PFAS. EPA's national monitoring covered systems serving 3,300 people or more, so no results exist — which is not evidence that none is present.
Who supplies water to Hamden? ▼
Hamden Village Pws (PWSID OH8200003), one of 2 systems serving this area. Groundwater. Purchased groundwater from another system — SDWIS source code GWP
When was this system last inspected? ▼
It was last inspected on 2023-11-02. No significant deficiencies were recorded.

What Should Hamden Residents Do?

1
Read your annual water report
Your supplier publishes a Consumer Confidence Report each July covering the prior year.
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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