OH / Wauseon
OH · Tap water records
Wauseon tap water, in plain English
Here is what the EPA's own data shows about tap water in Wauseon. According to EPA SDWIS data retrieved June 2026, Wauseon is served by 2 active community water systems, together reported to serve about 8,818 people.
As of June 2026, EPA records show 52 violations across the community water system(s) serving Wauseon, going back to the earliest EPA record. 43 of these are classified by the EPA as health-based (a contaminant recorded above the limit the EPA tracks); the rest are monitoring or reporting violations. Each is listed by system below, with its status.
What the EPA has on record, by system
Wauseon City Pws
7,568 served · surface water · PWSID OH2600111 - Health-based TTHM: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 34 times between July 2016 and January 2024. The EPA record lists a level of 0.087 MG/L; the limit (MCL) is 0.08 MG/L. EPA records do not show all of these as returned to compliance.
- Monitoring Consumer Confidence Rule: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 2 times between July 2001 and January 2019. EPA records do not show all of these as returned to compliance.
- Monitoring Surface Water Treatment Rule: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 2 times in March 2017. All have since returned to compliance, per EPA records.
- Monitoring Interim Enhanced Surface Water Treatment Rule: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 2 times in October 2016. All have since returned to compliance, per EPA records.
Northeast Water System
1,250 served · surface water · PWSID OH2637812 - Health-based TTHM: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 9 times between April 2022 and October 2022. The EPA record lists a level of 0.081 MG/L; the limit (MCL) is 0.08 MG/L. All have since returned to compliance, per EPA records.
- Monitoring Consumer Confidence Rule: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 3 times between January 2019 and December 2023. EPA records do not show all of these as returned to compliance.
What this means
A health-based violation means a contaminant was recorded above the limit the EPA tracks for it. A monitoring or reporting violation means a required test or report was late or missed — not that a contaminant was measured above a limit. “Returned to compliance” means the EPA recorded the issue as resolved.
This page summarizes the EPA's own records and does not assess whether your water is safe to drink. For the most current details, you can verify every record directly with the EPA, and contact your water system with questions.
Source: U.S. EPA Envirofacts SDWIS, retrieved June 2026. Records cover the EPA's full reporting history for these systems. Verify at EPA ECHO.