C40/100
JEFFERSON REGIONAL WATER AUTHORITY — Water Quality Report 2026
Serving 4,750 people · Ohio
Water Source
Groundwater
County
—
System ID
OH5703012
Violations
49
Contaminant Test Results
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 166.00 mg/L | 1.30 mg/L | Over Limit |
Lead (90th percentile) | 0.002 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
1
Violation (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Surface water treatment technique failure
When: July 1, 2025 – August 20, 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 JEFFERSON REGIONAL WATER AUTHORITY
Is JEFFERSON REGIONAL WATER AUTHORITY water safe to drink?
JEFFERSON REGIONAL WATER AUTHORITY water receives a grade of C (40/100), which is considered fair. 1 contaminant(s) exceed EPA legal limits and 49 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has JEFFERSON REGIONAL WATER AUTHORITY detected?
32 contaminants were tested in JEFFERSON REGIONAL WATER AUTHORITY's water. Notable contaminants include Copper (90th percentile), Lead (90th percentile). 1 exceed EPA legal limits (MCLs). 2 exceed EPA health goals (MCLGs).
Does JEFFERSON REGIONAL WATER AUTHORITY have any EPA violations?
Yes, JEFFERSON REGIONAL WATER AUTHORITY has 49 EPA violation(s) on record, with the most recent in 2025. Violation types include Other, MR.
How many people does JEFFERSON REGIONAL WATER AUTHORITY serve?
JEFFERSON REGIONAL WATER AUTHORITY serves approximately 4,750 people, Ohio.
What type of water does JEFFERSON REGIONAL WATER AUTHORITY provide?
JEFFERSON REGIONAL WATER AUTHORITY sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is OH5703012.
How does JEFFERSON REGIONAL WATER AUTHORITY compare to other utilities in Ohio?
JEFFERSON REGIONAL WATER AUTHORITY scores 40/100 with a grade of C (fair). This score indicates room for improvement compared to other utilities. Visit our Ohio state page for a full comparison of water systems.