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Updated 2026-09-16
State water report

Kentucky Water Quality: 75 Cities Ranked by the Records

Water quality across 75 cities in Kentucky, drawn from EPA drinking-water records. Each city page shows the measured contaminants and a reproducible Purity Score.

Finding by finding

What Kentucky's records show

Counts of cities whose serving system reported each result. There is no statewide score: PurityMap does not average local records into a statewide safety verdict. 2 cities have a past health-based violation on record.

PFAS above a 2024 limit

MCL

10of 75 cities

Cities whose system reported a PFAS above its federal limit.

PFOS in Kentucky →
City rankings

Kentucky cities ranked by the records

Highest first. A summary of each serving system’s record, not a safety verdict.

  1. 1
    Northern Kentucky DistrictNORTHERN KENTUCKY WATER DISTRICT · KY0590220
    Report →
  2. 2
    Bowling GreenBOWLING GREEN MUNICIPAL UTILITIES · KY1140038
    Report →
  3. 3
    Hopkinsville EnvironmentHOPKINSVILLE WATER ENVIRONMENT AUTHORITY · KY0240201
    Report →
  4. 4
    Mccreary County DistrictMCCREARY COUNTY WATER DISTRICT · KY0740276
    Report →
  5. 5
    DanvilleDANVILLE CITY WATER WORKS · KY0110097
    Report →
  6. 6
    Henderson /NorthHENDERSON WATER UTILITY/NORTH · KY0510188
    Report →
  7. 7
    FranklinFRANKLIN WATER WORKS · KY1070144
    Report →
  8. 8
    SomersetSOMERSET WATER SERVICE · KY1000403
    Report →
  9. 9
    FlorenceFLORENCE WATER & SEWER · KY0080135
    Report →
  10. 10
    MurrayMURRAY WATER SYSTEM · KY0180306
    Report →

Showing the top 10 of 75 scored cities.

See all 75 in the table

75 cities, highest Purity Score first

  1. 1Northern Kentucky District
    NORTHERN KENTUCKY WATER DISTRICT · PWSID KY0590220 · Purity Score 100/100 (Excellent) · Confidence: moderate · Assessed at the water-system level
    PFPeA 4.5 ng/L detected, no federal or state limitDetected
  2. 2Bowling Green
    BOWLING GREEN MUNICIPAL UTILITIES · PWSID KY1140038 · Purity Score 100/100 (Excellent) · Confidence: moderate · Assessed at the water-system level
    No PFAS detectedNot detected
  3. 3Hopkinsville Environment
    HOPKINSVILLE WATER ENVIRONMENT AUTHORITY · PWSID KY0240201 · Purity Score 100/100 (Excellent) · Confidence: moderate · Assessed at the water-system level
    PFAS detected, none above a limitDetected
  4. 4Mccreary County District
    MCCREARY COUNTY WATER DISTRICT · PWSID KY0740276 · Purity Score 100/100 (Excellent) · Confidence: moderate · Assessed at the water-system level
    PFBA 5.9 ng/L detected, no federal or state limitDetected
  5. 5Danville
    DANVILLE CITY WATER WORKS · PWSID KY0110097 · Purity Score 100/100 (Excellent) · Confidence: moderate · Assessed at the water-system level
    No PFAS detectedNot detected
  6. 6Henderson /North
    HENDERSON WATER UTILITY/NORTH · PWSID KY0510188 · Purity Score 100/100 (Excellent) · Confidence: moderate · Assessed at the water-system level
    No PFAS detected; lead 0.43 µg/LDetected
  7. 7Franklin
    FRANKLIN WATER WORKS · PWSID KY1070144 · Purity Score 100/100 (Excellent) · Confidence: moderate · Assessed at the water-system level
    PFBA 7.7 ng/L detected, no federal or state limitDetected
  8. 8Somerset
    SOMERSET WATER SERVICE · PWSID KY1000403 · Purity Score 100/100 (Excellent) · Confidence: moderate · Assessed at the water-system level
    No PFAS detectedNot detected
  9. 9Florence
    FLORENCE WATER & SEWER · PWSID KY0080135 · Purity Score 100/100 (Excellent) · Confidence: moderate · Assessed at the water-system level
    No PFAS detectedNot detected
  10. 10Murray
    MURRAY WATER SYSTEM · PWSID KY0180306 · Purity Score 100/100 (Excellent) · Confidence: moderate · Assessed at the water-system level
    No PFAS detectedNot detected
  11. 11Paintsville
    PAINTSVILLE MUNICIPAL WATER WORKS · PWSID KY0580340 · Purity Score 100/100 (Excellent) · Confidence: moderate · Assessed at the water-system level
    No PFAS detectedNot detected
  12. 12Henderson County District
    HENDERSON COUNTY WATER DISTRICT · PWSID KY0510189 · Purity Score 100/100 (Excellent) · Confidence: moderate · Assessed at the water-system level
    No PFAS detectedNot detected
Showing 12 of 75.

Ranked by the Purity Score of each city's main water system, highest first. Scores belong to water systems; there is no state score. The score is computed only from contaminants measured in the published EPA record, so this ranks the record, not which city's water is safest. How the score works. See how Kentucky compares with other states.

By contaminant

PFAS and lead in Kentucky

Counties

Kentucky counties

31 counties with city reports
Show all 31 counties
Suppliers

Largest water systems

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Full indexAll 75 Kentucky city reports, A–Z
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Questions

Kentucky water, frequently asked

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How does Kentucky tap water compare across cities?

PurityMap ranks 75 cities in Kentucky by the Purity Score of each city's main water system, computed only from contaminants measured in the published EPA record. Scores belong to water systems, not to cities. The highest published score is Northern Kentucky District's main water system: NORTHERN KENTUCKY WATER DISTRICT · PWSID KY0590220 · Purity Score 100 (Excellent) · Confidence: moderate · Assessed at the water-system level. The ranking compares the records, not which city's water is safest, and your own tap can differ with household plumbing.

How many Kentucky cities have PFAS above the federal limit?

10 cities of 75 had at least one regulated PFAS (PFOA, PFOS or PFHxS) measured above the 2024 federal limit in EPA's UCMR 5 testing, including Georgetown (PFOS 12 ng/L), Big Sandy District (HFPO-DA (GenX) 25 ng/L), Paducah (PFOS 8.1 ng/L). PFAS were detected at any level in 29.

Is there lead in Kentucky tap water?

Utilities report lead as a 90th-percentile result from home taps. 29 of 75 Kentucky cities reported a value above zero, and none was above the 15 µg/L federal action level. Lead usually comes from a building's own pipes and fixtures, so only a test at your tap tells you what you drink.

Have Kentucky water systems had drinking-water violations?

2 cities in Kentucky have a health-based violation in the federal SDWIS record within about the last ten years. Each city report lists the contaminant, year and whether it was resolved.

Limits, sources and corrections

A statewide page cannot tell you what reaches a specific address. Water quality varies by supplier, sampling period and household plumbing; open a city report for the evidence behind a local result.

Sources: EPA UCMR 5 (PFAS, 2024), SDWIS Lead and Copper Rule 90th-percentile results and health-based violations, and utility Consumer Confidence Reports where on file. Every city report links its dated source records.

Updated 2026-09-16. How PurityMap analyzes water data · Report an error