Kentucky: drinking water & radon
Kentucky has 375 active community water systems. Since 2016, 179 reported health-based violations; 0 had a latest lead result above 15 ppb; 31 measured PFOA or PFOS at or above 4 ppt.
Radon zones in Kentucky
tap a countyMost health-based violations
| Providence Water Works 4,538 people | 40 |
| Martin Water Department 1,167 people | 34 |
| Mountain Water Dist 44,057 people | 28 |
| Union County Water District 6,117 people | 28 |
| Big Sandy Water District 13,044 people | 20 |
| Calhoun Water Works 966 people | 19 |
| Reid Village Water District 2,545 people | 17 |
| Sharpsburg Water District 4,332 people | 16 |
| Clay Water Works 1,287 people | 15 |
| Jessamine Co Water District #1 6,831 people | 15 |
Highest latest lead (90th percentile)
| Wickliffe Municipal Water System 1,264 people | 14 ppb |
| Clay Water Works 1,287 people | 12 ppb |
| Falmouth Water Department 3,861 people | 11 ppb |
| Riverside 25 LLC 49 people | 9 ppb |
| Seymour Water Plant, Lp 1,560 people | 8.4 ppb |
| Stella Trailer Park 74 people | 7.5 ppb |
| Tompkinsville Water Works 2,404 people | 7 ppb |
| Jackson Municipal Water Works 4,704 people | 7 ppb |
| Brownsville Municipal Water System 1,441 people | 7 ppb |
| Horse Cave Water System 2,744 people | 6.7 ppb |
Highest PFOA / PFOS
| Harrison Co Water Association 16,736 people | 47.9 ppt |
| Cynthiana Municipal Water Works 7,263 people | 37 ppt |
| Fort Campbell Water System 43,270 people | 27.3 ppt |
| Georgetown Municipal Water Service 44,608 people | 12 ppt |
| Sturgis Water Works 3,490 people | 10.8 ppt |
| Whitley Co Water District 9,825 people | 10 ppt |
| Cumberland Falls Highway Water District 9,498 people | 8.6 ppt |
| Union County Water District 6,117 people | 8.6 ppt |
| Paducah Water Works 65,004 people | 8.1 ppt |
| Louisville Water Company 806,997 people | 7.5 ppt |
Largest systems
| Louisville Water Company 806,997 people | 806,997 |
| Kentucky-American Water Co 669,042 people | 669,042 |
| Northern Kentucky Water District 259,949 people | 259,949 |
| Evansville Water Utility 182,444 people | 182,444 |
| Warren County Water District 91,118 people | 91,118 |
| Hardin County Water District #2 76,326 people | 76,326 |
| Boone Co Water & Sewer District 66,300 people | 66,300 |
| Paducah Water Works 65,004 people | 65,004 |
| Owensboro Municipal Utilities 60,473 people | 60,473 |
| Bowling Green Municipal Utilities 53,601 people | 53,601 |
All ZIP codes in Kentucky
933 ZIP codes.
What this is — and isn’t. These are records your water utility and state reported to the EPA, and the EPA’s radon map for your county. They describe the system and the area, not the water from your own tap or the air in your home. For that, read your utility’s annual Consumer Confidence Report and test: lead and radon tests are inexpensive.
Questions
How many water systems in Kentucky have violations?
179 of 375 active community water systems in Kentucky reported at least one health-based violation since 2016 (EPA SDWIS).
What is the radon risk in Kentucky?
251 ZIP codes are in EPA radon zone 1 (highest potential), 642 in zone 2 and 40 in zone 3. EPA recommends testing every home.