Water Quality in Ohio
1,094 water systems • 0 cities • EPA SDWIS Data
1,094
Water Systems
61,604
Total Violations
0
Health-Based Violations
10,443,946
Population Served
Overview
Ohio has 1,094 active community water systems serving 10,443,946 people. These systems have accumulated 61,604 EPA Safe Drinking Water Act violations on record, of which 0 are health-based violations (meaning a contaminant exceeded safe levels).
Common contaminants found in violations: Coliform (TCR), TTHM, Total Haloacetic Acids (HAA5), Chlorine, Nitrate, Arsenic, Barium, Cadmium, Chromium, Fluoride.
Largest Cities in Ohio
| # | City | Population | Violations | Water Systems |
|---|
All Cities in Ohio
| City | Population | Violations | Health Violations | Contaminants |
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Data Sources
Drinking water data from the EPA Safe Drinking Water Information System (SDWIS). Only active community water systems (CWS) serving 100+ people are included.