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Wauseon, OH Tap Water Quality 2026

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

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

Main Utility: Wauseon City Pws PWSID: OH2600111 Updated: 2026 Q2
✅

No federal limits exceeded on record

Lead was not detected and no violations are open. PFAS was sampled but not enough times for a compliance determination.

C

Wauseon earns a C for water quality

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

Lead: not detected
PFAS sampled, too few results to judge
13 violations since 2015, 10 health-based
No violations currently open
Wauseon's lead level vs. all Ohio community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: Not detected — 0% of the federal action level
✓ Lower lead than % of Ohio utilities
Population Served
7550
~3123 connections
Water Source
Surface water
Drawn from surface water — SDWIS source code SW
Active Violations
0
13 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
Copper (Cu)
90th percentile of tap samples. SDWIS reports a copper figure only when a system exceeds the action level, so any value here is an exceedance.
4,692% of EPA action level
61,000 ppb
Action level: 1,300 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. Copper reached the action level here; a copper figure appears in SDWIS only when a system triggers it.

Contaminant Violations (2015–Present)

ContaminantTypeMeasuredLimitPeriodStatus
TTHM MCL EXCEEDANCE 0.082 MG/L 0.080 mg/L 2024 Resolved
TTHM MCL EXCEEDANCE 0.085 MG/L 0.080 mg/L 2023 Resolved
TTHM MCL EXCEEDANCE 0.082 MG/L 0.080 mg/L 2023 Resolved
TTHM MCL EXCEEDANCE 0.083 MG/L 0.080 mg/L 2022 Resolved
TTHM MCL EXCEEDANCE 0.084 MG/L 0.080 mg/L 2022 Resolved
TTHM MCL EXCEEDANCE 0.089 MG/L 0.080 mg/L 2022 Resolved
TTHM MCL EXCEEDANCE 0.085 MG/L 0.080 mg/L 2021 Resolved
Consumer Confidence Rule OTHER — — 2019 Unaddressed
Surface Water Treatment Rule MONITORING AND REPORTING — — 2017 Resolved
Interim Enhanced Surface Water Treatment Rule MONITORING AND REPORTING — — 2016 Resolved
TTHM MCL EXCEEDANCE 0.087 MG/L 0.080 mg/L 2016 Resolved
TTHM MCL EXCEEDANCE 0.081 MG/L 0.080 mg/L 2015 Resolved
TTHM MCL EXCEEDANCE 0.0864 MG/L 0.080 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

13 violations are on record since 2015, of which 10 were health-based. All have been resolved and none remain open.

About the Main Water System

Utility Wauseon City Pws
PWSID OH2600111
Water source Surface water — Drawn from surface water — SDWIS source code SW
Population served 7,550
Service connections 3,123
Systems serving this area 1
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Wauseon tap water safe to drink? ▼
No federal limit is exceeded on record. No violations are currently open.
Does Wauseon water have PFAS? ▼
It was sampled, but no sampling point had enough results for a compliance determination.
Who supplies water to Wauseon? ▼
Wauseon City Pws (PWSID OH2600111). Surface water. Drawn from surface water — SDWIS source code SW
When was this system last inspected? ▼
It was last inspected on 2025-04-25. No significant deficiencies were recorded.

What Should Wauseon 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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