Kentucky Water Quality Ratings
TapWaterSafety has rated 11 public water systems in Kentucky, serving a combined 3,046,582 residents. The statewide average grade is C.
State average grade
C
Total utilities rated
11
Population served
3,046,582
Most recent test
2024
🇪🇺 Would fail EU standards
2 of 11
Top water quality concerns in Kentucky
- Haloacetic acids (HAA9) significantly above health guideline
- Total trihalomethanes (TTHMs) significantly above health guideline
- Haloacetic acids (HAA5) significantly above health guideline
- PFAS contamination
- Lead detected in source water
Cities in Kentucky
Browse tap water quality reports by city. Click any city to see its grade, what's in the water, and recommended filters.
Grade distribution
All rated utilities in Kentucky
Sorted by score, highest first. Click any utility to see the full grade card.
| Rank | Utility | City | Population | Score | Grade |
|---|---|---|---|---|---|
| #1 | BOONE CO WATER & SEWER DISTRICT | BURLINGTON | 66,300 | 87 | A |
| #2 | NORTHERN KENTUCKY WATER DISTRICT | FT. THOMAS | 259,949 | 87 | A |
| #3 | BOWLING GREEN MUNICIPAL UTILITIES | BOWLING GREEN | 53,601 | 82 | B |
| #4 | WARREN COUNTY WATER DISTRICT | BOWLING GREEN | 91,118 | 79 | B |
| #5 | Lexington Water Utilities | Lexington | 323,000 | 76 | B |
| #6 | City of Louisville Water Department | Louisville | 617,000 | 75 | B |
| #7 | LOUISVILLE WATER COMPANY | LOUISVILLE | 764,769 | 74 | C |
| #8 | KENTUCKY-AMERICAN WATER CO | LEXINGTON | 669,042 | 71 | C |
| #9 | PADUCAH WATER WORKS | PADUCAH | 65,004 | 69 | C |
| #10 | HARDIN COUNTY WATER DISTRICT #2 | ELIZABETHTOWN | 76,326 | 66 | C |
| #11 | OWENSBORO MUNICIPAL UTILITIES | OWENSBORO | 60,473 | 62 | D |