F0/100
WARREN CITY PWS — Water Quality Report 2026
Serving 49,130 people · Ohio
Water Source
Surface Water
County
—
System ID
OH7803811
Violations
42
Contaminant Test Results
3 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 18.00 mg/L | 1.30 mg/L | Over Limit |
chlorate | 224.00 µg/L | — | Above Goal |
Lead (90th percentile) | 0.004 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
1
Violation (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Monitoring / Reporting Violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: July 1, 2023 – December 31, 2023Rule: Ground Water RuleEnforcement: 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 WARREN CITY PWS
Is WARREN CITY PWS water safe to drink?
WARREN CITY PWS water receives a grade of F (0/100), which is considered failing. 1 contaminant(s) exceed EPA legal limits and 42 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has WARREN CITY PWS detected?
70 contaminants were tested in WARREN CITY PWS's water. Notable contaminants include Copper (90th percentile), Lead (90th percentile), chlorate. 1 exceed EPA legal limits (MCLs). 3 exceed EPA health goals (MCLGs).
Does WARREN CITY PWS have any EPA violations?
Yes, WARREN CITY PWS has 42 EPA violation(s) on record, with the most recent in 2023. Violation types include MR, TT. 11 are health-based violations.
How many people does WARREN CITY PWS serve?
WARREN CITY PWS serves approximately 49,130 people, Ohio.
What type of water does WARREN CITY PWS provide?
WARREN 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 OH7803811.
How does WARREN CITY PWS compare to other utilities in Ohio?
WARREN 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.