D39/100
MANSFIELD CITY — Water Quality Report 2026
Serving 51,000 people · Ohio
Water Source
Surface Water
County
—
System ID
OH7002914
Violations
22
Contaminant Test Results
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 430.00 mg/L | 1.30 mg/L | Over Limit |
Lead (90th percentile) | 0.002 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
6
Violations (last 5yr)
2
Unresolved
4
Health-Related
TIER 2Resolved
Failed treatment technique requirements
When: May 1, 2025 – May 9, 2025Rule: Surface Water Treatment RuleEnforcement: Resolving — corrective action underway
TIER 1 — URGENTResolved
Violation related to Nitrate
When: January 1, 2025 – January 31, 2025Rule: Surface Water Treatment RuleEnforcement: Resolving — corrective action underway
TIER 2Resolved
Treatment technique violation
When: October 17, 2024 – July 7, 2025Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 3Unresolved
Reporting violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: October 17, 2024Rule: Ground Water RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 3Unresolved
Disinfection byproduct treatment technique failure
When: August 21, 2023Rule: Ground Water RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 2Resolved
Public notification violation
When: January 1, 2023 – June 30, 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 MANSFIELD CITY
Is MANSFIELD CITY water safe to drink?
MANSFIELD CITY water receives a grade of D (39/100), which is considered poor. 1 contaminant(s) exceed EPA legal limits and 22 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has MANSFIELD CITY detected?
70 contaminants were tested in MANSFIELD CITY's water. Notable contaminants include Copper (90th percentile), Lead (90th percentile). 1 exceed EPA legal limits (MCLs). 2 exceed EPA health goals (MCLGs).
Does MANSFIELD CITY have any EPA violations?
Yes, MANSFIELD CITY has 22 EPA violation(s) on record, with the most recent in 2025. Violation types include TT, RPT, Other. 7 are health-based violations.
How many people does MANSFIELD CITY serve?
MANSFIELD CITY serves approximately 51,000 people, Ohio.
What type of water does MANSFIELD CITY provide?
MANSFIELD CITY 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 OH7002914.
How does MANSFIELD CITY compare to other utilities in Ohio?
MANSFIELD CITY scores 39/100 with a grade of D (poor). This score suggests significant water quality concerns relative to other utilities. Visit our Ohio state page for a full comparison of water systems.