Tap Truth EPA drinking water records, in plain English

Public water system record

Wauseon City PWS

Serves Wauseon, Fulton County, OH · 7,568 people served

Federal records show 7 health-based violations and 3 monitoring/reporting issues for Wauseon City PWS in the last ten years. The most serious issue in this window was a resolved Total Trihalomethanes (TTHMs) violation.

  • OH2600111
  • WAUSEON
  • OH
  • 7,568 served

System profile

Source water Surface water
ZIP 43567
EPA system ID OH2600111

Verify this system on EPA ECHO →

Health-based violations, last 10 years
7
Resolved
7
Unresolved
0
Any acute record
No
Monitoring issues, last 10 years
3

Key facts

  • Wauseon City PWS draws water from 3 surface water intakes and 2 reservoirs.
  • Highest measured level in the last 10 years: Total Trihalomethanes (TTHMs), 0.089 mg/L, federal limit 0.08 mg/L (1.1 times the limit), 2022.
  • Most recent formal enforcement: compliance order (no penalty) by Ohio, January 2025.
  • Record on file since 1993, with 12 health-based violations before October 19, 2016.
  • Lead pipe inventory: 0 lead and 463 unknown out of 3,249 service lines.

Check whether Wauseon City PWS serves your address

Address suggestions by Mapbox

Health-based violations

Since October 2016

Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.

Contaminant Rule family Start date Status Acute
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.082 mg/L, federal limit 0.08 mg/L (at or just above the limit)
 220 Jan 1, 2024 Resolved No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.085 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
 220 Oct 1, 2023 Resolved No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.082 mg/L, federal limit 0.08 mg/L (at or just above the limit)
 220 Jul 1, 2023 Resolved No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.083 mg/L, federal limit 0.08 mg/L (at or just above the limit)
 220 Jul 1, 2022 Resolved No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.084 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
 220 Apr 1, 2022 Resolved No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.089 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
 220 Jan 1, 2022 Resolved No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.085 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
 220 Oct 1, 2021 Resolved No

Monitoring and reporting issues

Since October 2016

Missed tests or reports, not contaminants found above a limit.

Issue Start date Status
Consumer Confidence Rule
OTHER
 Jan 7, 2019 Active
Surface Water Treatment Rule
Monitoring and reporting
 Mar 1, 2017 Resolved
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
 Oct 1, 2016 Resolved

Full record since 1993

EPA's records for Wauseon City PWS go back to 1993. Before October 19, 2016 they list 12 health-based violations (12 resolved) and 6 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
1990s 1 1
2000s 8 1
2010 to October 18, 2016 3 4
October 19, 2016 to 2019 0 2
2020s 7 0

Most recent health-based violation before October 19, 2016: Total Trihalomethanes (TTHMs), began July 2016, Resolved.

Show all 12 health-based violations before October 19, 2016
Contaminant Start date Status
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.087 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
 Jul 1, 2016 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.081 mg/L, federal limit 0.08 mg/L (at or just above the limit)
 Jul 1, 2015 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.0864 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
 Apr 1, 2015 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.082 mg/L, federal limit 0.08 mg/L (at or just above the limit)
 Oct 1, 2005 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.082 mg/L, federal limit 0.08 mg/L (at or just above the limit)
 Jul 1, 2005 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.098 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
 Apr 1, 2005 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.096 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
 Jan 1, 2005 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.106 mg/L, federal limit 0.08 mg/L (1.3 times the limit)
 Oct 1, 2004 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.117 mg/L, federal limit 0.08 mg/L (1.5 times the limit)
 Jul 1, 2004 Resolved
Surface Water Treatment Rule
Treatment technique failure
 Jan 1, 2003 Resolved
Nitrate (acute)
Contaminant limit exceeded
Measured 11 mg/L, federal limit 10 mg/L (1.1 times the limit)
 Mar 1, 2000 Resolved
Surface Water Treatment Rule
Treatment technique failure
 Nov 1, 1993 Resolved

Enforcement actions

Ohio regulators took 2 formal enforcement actions against Wauseon City PWS between 2024 and 2025. The most recent was a compliance order (no penalty) in January 2025.

Date By Action Violations covered
Jan 30, 2025 Ohio Compliance order (no penalty) 1 violation (1 health-based): Total Trihalomethanes (TTHMs)
Nov 27, 2024 Ohio Compliance order (no penalty) 7 violations (7 health-based): Total Trihalomethanes (TTHMs)

What the violations mean

Total Trihalomethanes (TTHMs)

7 incidents

Disinfection byproduct levels exceeded the federal limit

Long-term TTHM exposure may increase bladder cancer risk

Where the water comes from

Wauseon City PWS draws water from 3 surface water intakes and 2 reservoirs. 1 other community water system buys water from Wauseon City PWS. 1 other public water system has an emergency connection to Wauseon City PWS.

Community systems that buy water from it

Annual water quality report

Wauseon City PWS must give its customers an annual water quality report (Consumer Confidence Report) by July 1, with the levels its tests found in the previous year.

Where the state allows it, systems serving fewer than 10,000 people may publish the report in a local newspaper or news site instead of mailing it, and must provide a copy on request.

Find a posted report with EPA's Consumer Confidence Report search

Testing your own water

To test the water at your tap, or a private well this record does not cover, use a laboratory certified for drinking water by Ohio.

Certified drinking water labs by state EPA guidance for private wells