Cincinnati, Ohio Water Quality Report
Comprehensive analysis of tap water safety based on EPA data
Last updated: January 2026
Is Cincinnati's Water Safe to Drink?
Generally Safe. Cincinnati's tap water meets EPA standards for drinking water quality. The water scored 97/100 in our analysis.
Contaminants Found in Cincinnati's Water
1 contaminants tested • Data from EPA SDWIS database
| Contaminant | Level Detected | EPA Limit | % of Limit | Status |
|---|---|---|---|---|
Lead | 0.0020 mg/L | 0.015 mg/L | 13.3% | Safe |
About Cincinnati's Water System
CINCINNATI PUBLIC WATER SYSTEM
- PWS ID:
- OH3102612
- Population Served:
- 750,200
- Water Source:
- surface
A+97/100
Cincinnati Water Quality Score
Based on EPA contaminant data and compliance records
100
Contaminants
100
Compliance
85
Infrastructure
Positive Findings
- Excellent overall water quality
- No recorded violations
- All tested contaminants well below EPA limits
- Low lead levels detected
Protect Your Family's Water
Even with good water quality, many families choose to filter their water for extra peace of mind.
Affiliate links - we may earn a commission
Other Cities in Ohio
Compare water quality with nearby cities.
View all Ohio cities →Frequently Asked Questions
- Where does Cincinnati's water come from?
- Cincinnati primarily uses surface water sources.
- How often is Cincinnati's water tested?
- Water utilities are required to test for contaminants regularly and report results to the EPA.
- Should I use a water filter in Cincinnati?
- While the water meets EPA standards, many families choose filters for extra peace of mind.