Water Health Check Report

Louisville, KY

Louisville Water Company · Surface water source

72

Fair

1 above EPA limit
1 above EWG guideline

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EPA · KY0560258UCMR5 PFAS data included764,769 people servedLast updated Nov 2023
EPA UCMR5 · November 2023EPA SDWIS · January 1998

Fair — with 2 concerns

Louisville Water Company has 1 contaminant above EPA legal limits and 1 above EWG health guidelines. Lead levels within limits at treatment plant

Lead levels within limits at treatment plant

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Contaminants tested

28 total · 1 above EWG guideline
ContaminantLevelStatus
7.5 ppt
Above EPA limit
4.0 ppt
Above guideline
3.5 ppt
Within limits
3.0 ppt
Within limits
ND ppb
Within limits
Copper

CAS 7440-50-8

ND ppm
Within limits
ND
Not detected
ND
Not detected
ND
Not detected
ND
Not detected
ND
Not detected
Lithium

CAS 7439-93-2

ND
Not detected
ND
Not detected
ND
Not detected
ND
Not detected
ND
Not detected
ND
Not detected
ND
Not detected
ND
Not detected
ND
Not detected
ND
Not detected
ND
Not detected
ND
Not detected
ND
Not detected
ND
Not detected
ND
Not detected
ND
Not detected
ND
Not detected
LegendWithin limitsAbove EWG guidelineAbove EPA limitNot detectedSource: EPA SDWIS · UCMR5 · EWG Health Guidelines

Filter recommendation

2 contaminants above guidelines. Here's what removes them.

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Data sources

EPA UCMR5 (PFAS + lithium)·November 2023·One-time programme 2023–2025
EPA SDWIS compliance data·January 1998·Annual reporting cycle

Status flags compare detected levels against both EPA legal limits and EWG health-based guidelines—which are stricter and science-derived, independent of political feasibility.

Louisville, KY water quality report · WaterHealthCheck