F0/100
WILMINGTON CITY PWS — Water Quality Report 2026
Serving 12,401 people · Ohio
Water Source
Surface Water
County
—
System ID
OH1401211
Violations
37
Contaminant Test Results
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 34.00 mg/L | 1.30 mg/L | Over Limit |
Lead (90th percentile) | < 0.001 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
1
Violation (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Surface water treatment technique failure
When: December 19, 2024 – February 12, 2025Enforcement: Resolving — corrective action underway
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
Frequently Asked Questions About WILMINGTON CITY PWS
Is WILMINGTON CITY PWS water safe to drink?
WILMINGTON CITY PWS water receives a grade of F (0/100), which is considered failing. 1 contaminant(s) exceed EPA legal limits and 37 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has WILMINGTON CITY PWS detected?
70 contaminants were tested in WILMINGTON CITY PWS's water. Notable contaminants include Copper (90th percentile), Lead (90th percentile). 1 exceed EPA legal limits (MCLs). 2 exceed EPA health goals (MCLGs).
Does WILMINGTON CITY PWS have any EPA violations?
Yes, WILMINGTON CITY PWS has 37 EPA violation(s) on record, with the most recent in 2024. Violation types include Other, MCL, MR. 26 are health-based violations.
How many people does WILMINGTON CITY PWS serve?
WILMINGTON CITY PWS serves approximately 12,401 people, Ohio.
What type of water does WILMINGTON CITY PWS provide?
WILMINGTON CITY PWS sources its water from surface water. Surface water comes from rivers, lakes, or reservoirs and typically requires more extensive treatment. The utility's system ID is OH1401211.
How does WILMINGTON CITY PWS compare to other utilities in Ohio?
WILMINGTON CITY PWS scores 0/100 with a grade of F (failing). This score suggests significant water quality concerns relative to other utilities. Visit our Ohio state page for a full comparison of water systems.