Tap water in Louisville, KY — ZIP 40031
3 public water systems serving about 855,473 people. PFAS "forever chemicals" have been detected here.
C
Fair
PFAS detected: at least one system serving this ZIP reported PFAS in EPA UCMR 5
testing. Levels and the 2024 federal limits are shown per system below.
Water systems serving 40031
Louisville Water Company
PWSID KY0560258 · serves 806,997 ·
surface water
0 health-based / 0 total violations (5 yrs)
· PFAS up to 7.5 ppt — above federal limit
Oldham County Water District
PWSID KY0930333 · serves 38,409 ·
groundwater
0 health-based / 0 total violations (5 yrs)
Lagrange Utilities Commission
PWSID KY0930481 · serves 10,067 ·
groundwater
0 health-based / 0 total violations (5 yrs)
Grades summarize EPA SDWIS violation records (last 5 years) and UCMR 5 PFAS results. They are informational, not a health determination. Methodology