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CheckYourWater

PFAS Testing Results

Kentucky

PFAS testing results for 231 water systems serving 4,319,288 residents.

Systems tested

231

37.7% had PFAS detections

Limits exceeded

32

13.9% of systems

Population affected

1.3M

served by systems over federal limits

Most common compound

11Cl-PF3OUdS

detected in 35 systems

Grade distribution

Every water system gets a letter grade based on how its worst detected PFAS compound compares to the federal Maximum Contaminant Level. Lower grades mean higher contamination.

A — 144 systems (62.3%)
B — 42 systems (18.2%)
C — 13 systems (5.6%)
D — 31 systems (13.4%)
F — 1 system (0.4%)

How grades are calculated →

Communities exceeding federal limits

The water systems in Kentucky where at least one PFAS compound exceeds the EPA Maximum Contaminant Level, sorted worst first.

System nameCityGradeWorst compoundTimes over limitPopulation
HARRISON CO WATER ASSOCCYNTHIANA
PFOS7.6x17K
CYNTHIANA MUNICIPAL WATER WORKSCYNTHIANA
PFOS4.9x7.3K
STURGIS WATER WORKSSTURGIS
PFOA2.7x3.5K
BIG SANDY WATER DISTRICTCATLETTSBURG
HFPO-DA2.5x13K
GEORGETOWN MUNICIPAL WATER SERVICEGEORGETOWN
PFOA2.3x36K
WHITLEY CO WATER DISTRICTWILLIAMSBURG
PFOA2.3x9.8K
UNION COUNTY WATER DISTRICTMORGANFIELD
PFOA2.1x6.1K
LOUISVILLE WATER COMPANYLOUISVILLE
PFOA1.9x765K
CRITTENDEN-LIVINGSTON CO WATER DISTRICTSALEM
PFOS1.8x9.6K
CANNONSBURG WATER DISTRICTASHLAND
PFOA1.7x9.0K

Resources for taking action are available in our community toolkit.

What Kentucky is doing about PFAS

As of April 2026, Kentucky has not adopted state-level PFAS drinking water standards beyond the federal EPA limits finalized in April 2024. The Kentucky Division of Water has monitored contamination in Ohio River basin communities downstream of the DuPont Washington Works plant in West Virginia, which is the historical source of much PFOA contamination in the region.

Public water systems in Kentucky are subject to the federal compliance timeline requiring initial monitoring by 2027 and treatment installation by 2029.

Based on Kentucky Division of Water publications.

All 231 tested water systems in Kentucky

Sorted from lowest grade to highest. Click any system name for the full report. Filter by city or name with the search box below.

Showing 50 of 231 systems

GradeSystem nameCityWorst compoundvs. EPA limitPopulation
HARRISON CO WATER ASSOCCYNTHIANAPFOS7.6× the federal limit17K
CYNTHIANA MUNICIPAL WATER WORKSCYNTHIANAPFOS4.9× the federal limit7.3K
STURGIS WATER WORKSSTURGISPFOA2.7× the federal limit3.5K
BIG SANDY WATER DISTRICTCATLETTSBURGHFPO-DA2.5× the federal limit13K
GEORGETOWN MUNICIPAL WATER SERVICEGEORGETOWNPFOA2.3× the federal limit36K
WHITLEY CO WATER DISTRICTWILLIAMSBURGPFOA2.3× the federal limit9.8K
UNION COUNTY WATER DISTRICTMORGANFIELDPFOA2.1× the federal limit6.1K
LOUISVILLE WATER COMPANYLOUISVILLEPFOA1.9× the federal limit765K
CRITTENDEN-LIVINGSTON CO WATER DISTRICTSALEMPFOS1.8× the federal limit9.6K
CANNONSBURG WATER DISTRICTASHLANDPFOA1.7× the federal limit9.0K
CUMBERLAND FALLS HIGHWAY WATER DISTRICTCORBINPFOA1.7× the federal limit9.5K
FLATWOODS WATER COMPANYFLATWOODSPFOA1.6× the federal limit9.6K
LEDBETTER WATER DISTRICTLEDBETTERPFOS1.6× the federal limit2.7K
PADUCAH WATER WORKSPADUCAHPFOS1.5× the federal limit65K
MT WASHINGTON WATER COMPANYMT WASHINGTONPFOA1.4× the federal limit24K
NORTH NELSON WATER DISTRICTCOXS CREEKPFOA1.4× the federal limit13K
TAYLORSVILLE WATER WORKSTAYLORSVILLEPFOA1.4× the federal limit22K
NORTH MCLEAN CO WATER DISTRICTLIVERMOREPFOA1.4× the federal limit2.9K
CORBIN UTILITIES COMMISSIONCORBINPFOA1.4× the federal limit16K
WHITESVILLE WATER WORKSWHITESVILLEPFOA1.4× the federal limit3.7K
BEATTYVILLE WATER WORKSBEATTYVILLEPFOS1.4× the federal limit8.4K
HARDIN COUNTY WATER DISTRICT #2ELIZABETHTOWNPFOA1.3× the federal limit76K
E DAVIESS CO WATER ASSOC INCKNOTTSVILLEPFOA1.3× the federal limit12K
OWENSBORO MUNICIPAL UTILITIESOWENSBOROPFOA1.3× the federal limit60K
BUFFALO TRAIL WATER ASSOCMAYSLICKPFOA1.3× the federal limit4.5K
GRAND RIVERS WATER SYSTEMGRAND RIVERSPFOS1.2× the federal limit4.0K
S E DAVIESS CO WATER DISTRICTOWENSBOROPFOA1.2× the federal limit34K
WEST SHELBY WATER DISTRICTSIMPSONVILLEPFOA1.1× the federal limit7.0K
CARROLLTON UTILITIESCARROLLTONPFHxS1.1× the federal limit6.9K
LYON COUNTY WATER DISTRICTKUTTAWAPFOS1.1× the federal limit6.7K
EAST PENDLETON WATER DISTRICTFALMOUTHPFOA1.0× the federal limit5.5K
NORTH SHELBY WATER DISTRICTBAGDADPFOA1.0× the federal limit15K
WESTERN LEWIS RECTORVILLE WATER DISTRICTMAYSVILLEHFPO-DA73% of federal limit6.5K
MANCHESTER WATER WORKS, KYMANCHESTERPFHxS70% of federal limit11K
WALTON WATERWORKS DEPARTMENTWALTONHFPO-DA68% of federal limit4.2K
BRACKEN COUNTY WATER DISTRICTBROOKSVILLEPFHxS55% of federal limit6.5K
PARIS WATER WORKSPARISPFPeABelow detection14K
PARKSVILLE WATER DISTRICTPARKSVILLEPFPeABelow detection4.3K
HOPKINSVILLE WATER ENVIRONMENT AUTHORITYHOPKINSVILLE6:2FTSBelow detection41K
KENTUCKY-AMERICAN WATER COLEXINGTON6:2FTSBelow detection300K
FARMDALE WATER DISTRICTFRANKFORT6:2FTSBelow detection8.2K
LAKE VILLAGE WATER ASSOCIATIONBURGIN6:2FTSBelow detection6.9K
WESTERN FLEMING WATER DISTRICTEWING6:2FTSBelow detection4.3K
PENDLETON CO WATER DISTRICT #1/SOUTHFALMOUTHPFPeABelow detection3.7K
CADIZ MUNICIPAL WATER COCADIZ6:2FTSBelow detection6.2K
LAWRENCEBURG WATER & SEWER DEPTLAWRENCEBURG6:2FTSBelow detection15K
SO ANDERSON WATER DISTRICTLAWRENCEBURGPFPeABelow detection8.4K
BATH COUNTY WATER DISTRICTSALT LICKPFBABelow detection10K
SHARPSBURG WATER DISTRICTSHARPSBURGPFBABelow detection4.3K
BOONE CO WATER & SEWER DISTRICTBURLINGTONPFPeABelow detection66K

Check your water system

Enter your zip code to see the PFAS results for the water system that serves your home.

Where this data comes from

  • EPA Unregulated Contaminant Monitoring Rule, 5th cycle (UCMR 5)
  • Testing period: 2023 to 2026
  • Federal limits: EPA Maximum Contaminant Levels finalized April 2024
  • Read the full methodology