A84/100
OTTAWA COUNTY REGIONAL WATER DISTRICT — Water Quality Report 2026
Serving 20,428 people · Ohio
Water Source
Surface Water
County
—
System ID
OH6205011
Violations
4
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 190.00 mg/L | 1.30 mg/L | Over Limit |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2020.
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 OTTAWA COUNTY REGIONAL WATER DISTRICT
Is OTTAWA COUNTY REGIONAL WATER DISTRICT water safe to drink?
OTTAWA COUNTY REGIONAL WATER DISTRICT water receives a grade of A (84/100), which is considered excellent. Out of 70 contaminants tested, 1 exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has OTTAWA COUNTY REGIONAL WATER DISTRICT detected?
70 contaminants were tested in OTTAWA COUNTY REGIONAL WATER DISTRICT's water. Notable contaminants include Copper (90th percentile). 1 exceed EPA legal limits (MCLs). 1 exceed EPA health goals (MCLGs).
Does OTTAWA COUNTY REGIONAL WATER DISTRICT have any EPA violations?
Yes, OTTAWA COUNTY REGIONAL WATER DISTRICT has 4 EPA violation(s) on record, with the most recent in 2020. Violation types include Other, TT. 1 are health-based violations.
How many people does OTTAWA COUNTY REGIONAL WATER DISTRICT serve?
OTTAWA COUNTY REGIONAL WATER DISTRICT serves approximately 20,428 people, Ohio.
What type of water does OTTAWA COUNTY REGIONAL WATER DISTRICT provide?
OTTAWA COUNTY REGIONAL WATER DISTRICT 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 OH6205011.
How does OTTAWA COUNTY REGIONAL WATER DISTRICT compare to other utilities in Ohio?
OTTAWA COUNTY REGIONAL WATER DISTRICT scores 84/100 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.