Louisville
Is Louisville tap water safe to drink?
Use extra caution — Louisville scores 0/100. This report aggregates EPA drinking water data across 2 local systems in Louisville. We found 3 total violations (0 unresolved).
Real-Time Environment
Live: 04:30 PM☀️ No active precipitation. Rainfall can impact surface water turbidity and pollutant runoff in Louisville.
Water Quality Impact
🛡️ Home Water Treatment Needs
Should you invest in filtration or softening for your home in Louisville?
Expert Advice
Given the safety margin, a Carbon Block or sediment filter is recommended to improve taste and remove trace particulates.
Buying a Filter?
Wondering if Louisville tap water needs filtering? We break it down.
Baby Formula Safety
Mixing baby formula with Louisville tap water? Read this first.
Homebuyer's Perspective
If you're house-hunting in Louisville, water quality belongs on your due-diligence checklist alongside schools and crime data. With a score of 0/100, we recommend budgeting for high-quality point-of-entry filtration systems to protect your home's value.
Health & Family Safety
Residents should monitor Selenium levels. Pregnant women and families with young children should consult the specific EPA health goals listed below.
View Health Risk Glossary →Compliance Record for Louisville
Based on EPA SDWIS violation records and contaminant test results for all water systems serving Louisville.
Frequently Asked Questions
Is Louisville tap water safe to drink?
Use extra caution — Louisville scores 0/100.
How many water systems serve Louisville?
Louisville is served by 2 public water systems in our latest EPA-backed dataset.
How can I check water quality for my exact address in Louisville?
Use the WaterQ search tool to look up your ZIP code and view nearby systems, contaminant levels, and recent violations for Louisville.
What is the water quality score for Louisville?
The water quality score for Louisville is N/A out of 100, based on EPA contaminant data, violation history, and testing results for all serving water systems.
What are the top contaminants in Louisville?
The top contaminants detected in Louisville include Selenium, Uranium, Lead. View detailed information on our contaminants page.
Louisville Water Quality Summary
Louisville, KY receives a water quality score of 0/100 (Grade F) based on EPA Safe Drinking Water Information System (SDWIS) compliance data for 1 public water system serving the area.
Louisville's water quality score is below the national average, indicating a history of EPA violations or elevated contaminant levels. Residents are encouraged to check their specific water system report and consider additional filtration.
Louisville's score of 0 is 66 points below the Kentucky state average of 66, and below the nationwide average of roughly 78/100 across all U.S. states.
Homebuyers and residents in Louisville must navigate the reality that this large city relies on a single water system, making any municipal treatment failures exceptionally widespread. The local drinking water has been graded at the absolute bottom of quality standards, highlighting severe systemic challenges that require close monitoring by households. This failing status highlights the environmental pressures within Kentucky's Appalachian and bluegrass region, which is influenced by legacy coal mining in the eastern counties.
Water quality data is sourced from the U.S. EPA SDWIS database and updated quarterly. Learn about our scoring methodology → Read our Kentucky water quality rankings report →
Key Contaminants
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Water Systems Serving Louisville (2)
Check Your Specific Address
Water quality can vary by neighborhood in Louisville.
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Compare Louisville water quality: View all states · Contaminant library · How we score water quality