B62/100
GUERNSEY CO. WATER DEPT. — Water Quality Report 2026
Serving 8,891 people · Ohio
Water Source
Purchased Surface Water
County
—
System ID
OH3000603
Violations
6
Contaminant Test Results
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 199.00 mg/L | 1.30 mg/L | Over Limit |
PFOA | 0.010 µg/L | 0.004 µg/L | Over Limit |
EPA Violation History
1
Violation (last 5yr)
0
Unresolved
1
Health-Related
TIER 2Resolved
Exceeded the Maximum Contaminant Level (running average)
When: April 1, 2024 – June 30, 2024Rule: Stage 2 DBPREnforcement: 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 GUERNSEY CO. WATER DEPT.
Is GUERNSEY CO. WATER DEPT. water safe to drink?
GUERNSEY CO. WATER DEPT. water receives a grade of B (62/100), which is considered good. Out of 32 contaminants tested, 2 exceed EPA legal limits. 2 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has GUERNSEY CO. WATER DEPT. detected?
32 contaminants were tested in GUERNSEY CO. WATER DEPT.'s water. Notable contaminants include Copper (90th percentile), PFOA. 2 exceed EPA legal limits (MCLs). 2 exceed EPA health goals (MCLGs).
Does GUERNSEY CO. WATER DEPT. have any EPA violations?
Yes, GUERNSEY CO. WATER DEPT. has 6 EPA violation(s) on record, with the most recent in 2024. Violation types include MCL, MR, Other. 4 are health-based violations.
How many people does GUERNSEY CO. WATER DEPT. serve?
GUERNSEY CO. WATER DEPT. serves approximately 8,891 people, Ohio.
What type of water does GUERNSEY CO. WATER DEPT. provide?
GUERNSEY CO. WATER DEPT. sources its water from purchased surface water. Surface water comes from rivers, lakes, or reservoirs and typically requires more extensive treatment. The utility's system ID is OH3000603.
How does GUERNSEY CO. WATER DEPT. compare to other utilities in Ohio?
GUERNSEY CO. WATER DEPT. scores 62/100 with a grade of B (good). This is an above-average performance for utilities statewide. Visit our Ohio state page for a full comparison of water systems.