C41/100
Wauseon Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 8,818 residents · Ohio
What's In Wauseon's Tap Water?
32
Contaminants Tested
1
Exceed EPA Limits
0
Above EPA Goals
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 61.00 mg/L | 1.30 mg/L | Over Limit |
EPA Violation History
7
Violations (last 5yr)
0
Unresolved
7
Health-Related
TIER 2Resolved
Exceeded the Maximum Contaminant Level (running average)
When: January 1, 2024 – March 31, 2024Rule: Stage 2 DBPREnforcement: Formal — state order issued
TIER 2Resolved
Exceeded the Maximum Contaminant Level (running average)
When: October 1, 2023 – December 31, 2023Rule: Stage 2 DBPREnforcement: Formal — state order issued
TIER 2Resolved
Exceeded the Maximum Contaminant Level (running average)
When: July 1, 2023 – September 30, 2023Rule: Stage 2 DBPREnforcement: Formal — state order issued
TIER 2Resolved
Exceeded the Maximum Contaminant Level (running average)
When: July 1, 2022 – September 30, 2022Rule: Stage 2 DBPREnforcement: Formal — state order issued
TIER 2Resolved
Exceeded the Maximum Contaminant Level (running average)
When: April 1, 2022 – June 30, 2022Rule: Stage 2 DBPREnforcement: Formal — state order issued
TIER 2Resolved
Exceeded the Maximum Contaminant Level (running average)
When: January 1, 2022 – March 31, 2022Rule: Stage 2 DBPREnforcement: Formal — state order issued
TIER 2Resolved
Exceeded the Maximum Contaminant Level (running average)
When: October 1, 2021 – December 31, 2021Rule: Stage 2 DBPREnforcement: Formal — state order issued
Understanding violation severity
Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.
Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly
Water Utility Details
WAUSEON CITY
Population Served
7,568
Water Source
Surface Water
System ID
OH2600111
NORTHEAST WATER SYSTEM
Population Served
1,250
Water Source
Purchased Surface Water
System ID
OH2637812
Frequently Asked Questions About Wauseon Water
Is Wauseon tap water safe to drink?
Wauseon, Ohio tap water receives a grade of C (41/100), which is considered fair. 1 contaminant(s) exceed EPA maximum contaminant levels and 33 violation(s) are on record. Residents should consider using an NSF-certified water filter to reduce contaminant exposure.
What contaminants are in Wauseon's water?
Of the 35 contaminants tested in Wauseon's water supply, the most notable include Copper (90th percentile). 1 contaminant(s) exceed EPA legal limits (MCLs). 1 contaminant(s) exceed EPA health goals (MCLGs), which are non-enforceable targets set at levels with no known health risk.
Does Wauseon have any water quality violations?
Yes, Wauseon has 33 EPA violation(s) on record, with the most recent in 2024. Violation types include MCL, Other, MR. 22 of these are health-based violations, which are the most serious category.
Do I need a water filter in Wauseon?
Based on EPA data, using a water filter in Wauseon is recommended. 1 contaminant(s) exceed legal limits. An NSF-certified filter — such as a reverse osmosis or activated carbon system — can effectively reduce many common contaminants. Choose a filter certified to remove the specific contaminants found in your area.
Where does Wauseon's tap water come from?
Wauseon's drinking water is sourced from surface water and supplied by WAUSEON CITY and 1 other water system(s). The system serves approximately 8,818 people. Surface water sources include rivers, lakes, and reservoirs.
How often is Wauseon's water tested?
Under the Safe Drinking Water Act (SDWA), water utilities are required to regularly test for over 90 contaminants. Testing frequency varies by contaminant — some are tested monthly, others quarterly or annually. Wauseon's water systems must report results to the EPA and publish an annual Consumer Confidence Report (CCR). The data on this page reflects the latest available EPA testing data.
How does Wauseon's water compare to other cities in Ohio?
Wauseon's water quality score of 41/100 earns a grade of C, which is considered fair. This is a below-average score that indicates room for improvement. Visit our Ohio state page to see how all cities in the state compare.
What should I do if I'm concerned about Wauseon's water quality?
If you have concerns about Wauseon's tap water, consider these steps: (1) Request your utility's annual Consumer Confidence Report for detailed local data. (2) Get your water independently tested through a state-certified laboratory. (3) Consider an NSF-certified water filter rated for the contaminants found in your area. (4) Contact your water utility (WAUSEON CITY) with specific questions. (5) Report water quality issues to your state drinking water program or the EPA Safe Drinking Water Hotline at 800-426-4791.