A81/100
PORTSMOUTH CITY — Water Quality Report 2026
Serving 40,475 people · Ohio
Water Source
Surface Water
County
—
System ID
OH7300111
Violations
4
Contaminant Test Results
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 85.00 mg/L | 1.30 mg/L | Over Limit |
Lead (90th percentile) | 0.001 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
2
Violations (last 5yr)
1
Unresolved
0
Health-Related
TIER 3Resolved
Surface water treatment technique failure
When: August 17, 2022 – June 16, 2023Enforcement: Resolving — corrective action underway
TIER 3Unresolved
Surface water treatment technique failure
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 PORTSMOUTH CITY
Is PORTSMOUTH CITY water safe to drink?
PORTSMOUTH CITY water receives a grade of A (81/100), which is considered excellent. Out of 70 contaminants tested, 1 exceed EPA legal limits. 2 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has PORTSMOUTH CITY detected?
70 contaminants were tested in PORTSMOUTH 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 PORTSMOUTH CITY have any EPA violations?
Yes, PORTSMOUTH CITY has 4 EPA violation(s) on record, with the most recent in 2022. Violation types include Other, TT. 1 are health-based violations.
How many people does PORTSMOUTH CITY serve?
PORTSMOUTH CITY serves approximately 40,475 people, Ohio.
What type of water does PORTSMOUTH CITY provide?
PORTSMOUTH 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 OH7300111.
How does PORTSMOUTH CITY compare to other utilities in Ohio?
PORTSMOUTH CITY scores 81/100 with a grade of A (excellent). This places it among the higher-performing utilities in the state. Visit our Ohio state page for a full comparison of water systems.