Louisville, Kentucky Water Quality Report
Comprehensive analysis of tap water safety based on EPA data
Last updated: January 2026
Is Louisville's Water Safe to Drink?
Generally Safe. Louisville's tap water meets EPA standards for drinking water quality. The water scored 95/100 in our analysis.
Contaminants Found in Louisville's Water
1 contaminants tested • Data from EPA SDWIS database
| Contaminant | Level Detected | EPA Limit | % of Limit | Status |
|---|---|---|---|---|
Lead | 0.0011 mg/L | 0.015 mg/L | 7.3% | Safe |
Compliance Violations
Past EPA violations recorded for Louisville's water system
other
Contaminant 7000 - 7/1/2001
ResolvedAbout Louisville's Water System
LOUISVILLE WATER COMPANY
- PWS ID:
- KY0560258
- Population Served:
- 764,769
- Water Source:
- surface
A+95/100
Louisville Water Quality Score
Based on EPA contaminant data and compliance records
100
Contaminants
94
Compliance
85
Infrastructure
Positive Findings
- Excellent overall water quality
- No violations in the past 3 years
- No health-based (MCL) violations
- All tested contaminants well below EPA limits
Protect Your Family's Water
Even with good water quality, many families choose to filter their water for extra peace of mind.
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Other Cities in Kentucky
Compare water quality with nearby cities.
View all Kentucky cities →Frequently Asked Questions
- Where does Louisville's water come from?
- Louisville primarily uses surface water sources.
- How often is Louisville'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 Louisville?
- While the water meets EPA standards, many families choose filters for extra peace of mind.