State drinking water records
Kentucky drinking water systems
375 community water systems serve Kentucky and are listed below under 120 counties and on the pages of 537 cities and towns. Their own population figures add up to 5,055,284 people, a sum that counts people twice where one system sells water to another.
171 of them (46%) had at least one health-based violation in the last 10 years. 29 systems still have one unresolved.
76 rely mainly on groundwater and 299 on surface water, counting water bought from other systems.
Their lead service line inventories list 5,248 lead lines, 22,788 galvanized lines that must be replaced and 424,320 lines of unknown material.
- Community water systems
- 375
- People served, sum of each system's own figure
- 5,055,284
- Systems with a health-based violation, last 10 years
- 171
- Systems with one unresolved
- 29
- Lead service lines in inventories
- 5,248
Counties
120 countiesEach county counts the systems whose service area map reaches it. Systems placed only by a mailing address are listed on the county pages but not counted here.
| County | Systems | People served | With a health-based violation, 10 years | With one unresolved |
|---|---|---|---|---|
| Adair County | 1 | 22,113 | 1 | 1 |
| Allen County | 3 | 24,747 | 1 | 0 |
| Anderson County | 2 | 23,165 | 1 | 0 |
| Ballard County | 4 | 5,377 | 0 | 0 |
| Barren County | 3 | 45,030 | 0 | 0 |
| Bath County | 3 | 16,722 | 3 | 0 |
| Bell County | 4 | 28,935 | 1 | 0 |
| Boone County | 6 | 100,098 | 0 | 2 |
| Bourbon County | 3 | 21,044 | 2 | 0 |
| Boyd County | 3 | 66,399 | 3 | 0 |
| Boyle County | 3 | 43,716 | 2 | 0 |
| Bracken County | 3 | 9,123 | 0 | 0 |
| Breathitt County | 3 | 9,872 | 2 | 0 |
| Breckinridge County | 3 | 21,624 | 1 | 0 |
| Bullitt County | 3 | 791,395 | 0 | 0 |
| Butler County | 2 | 16,884 | 1 | 0 |
| Caldwell County | 3 | 14,047 | 2 | 0 |
| Calloway County | 8 | 30,774 | 4 | 4 |
| Campbell County | 1 | 259,949 | 0 | 0 |
| Carlisle County | 4 | 2,503 | 0 | 0 |
| Carroll County | 4 | 12,987 | 1 | 0 |
| Carter County | 3 | 28,539 | 2 | 1 |
| Casey County | 3 | 27,254 | 1 | 1 |
| Christian County | 5 | 132,630 | 0 | 0 |
| Clark County | 2 | 37,189 | 1 | 0 |
| Clay County | 2 | 16,681 | 1 | 1 |
| Clinton County | 1 | 9,042 | 1 | 0 |
| Crittenden County | 2 | 12,610 | 2 | 0 |
| Cumberland County | 2 | 9,665 | 1 | 0 |
| Daviess County | 5 | 112,731 | 2 | 0 |
| Edmonson County | 3 | 24,289 | 2 | 0 |
| Elliott County | 2 | 14,925 | 1 | 1 |
| Estill County | 2 | 15,150 | 2 | 0 |
| Fayette County | 1 | 669,042 | 0 | 0 |
| Fleming County | 3 | 14,301 | 0 | 0 |
| Floyd County | 5 | 44,358 | 4 | 0 |
| Franklin County | 5 | 79,874 | 0 | 0 |
| Fulton County | 2 | 7,853 | 2 | 1 |
| Gallatin County | 2 | 7,848 | 0 | 0 |
| Garrard County | 3 | 20,867 | 1 | 0 |
| Grant County | 4 | 31,082 | 4 | 0 |
| Graves County | 9 | 28,761 | 1 | 0 |
| Grayson County | 2 | 28,471 | 1 | 0 |
| Green County | 2 | 17,893 | 0 | 0 |
| Greenup County | 8 | 49,463 | 5 | 0 |
| Hancock County | 3 | 18,471 | 1 | 0 |
| Hardin County | 4 | 136,859 | 1 | 1 |
| Harlan County | 15 | 27,083 | 8 | 5 |
| Harrison County | 2 | 23,999 | 1 | 0 |
| Hart County | 4 | 40,132 | 1 | 0 |
| Henderson County | 3 | 49,206 | 1 | 0 |
| Henry County | 3 | 22,370 | 1 | 0 |
| Hickman County | 3 | 6,595 | 2 | 0 |
| Hopkins County | 11 | 58,091 | 7 | 1 |
| Jackson County | 2 | 14,960 | 1 | 0 |
| Jefferson County | 1 | 764,769 | 0 | 0 |
| Jessamine County | 4 | 56,685 | 4 | 0 |
| Johnson County | 1 | 24,354 | 0 | 0 |
| Kenton County | 1 | 259,949 | 0 | 0 |
| Knott County | 3 | 9,239 | 2 | 0 |
| Knox County | 3 | 40,798 | 2 | 0 |
| Larue County | 2 | 13,691 | 2 | 0 |
| Laurel County | 5 | 71,586 | 1 | 0 |
| Lawrence County | 2 | 21,280 | 1 | 0 |
| Lee County | 1 | 8,428 | 1 | 1 |
| Leslie County | 1 | 9,614 | 1 | 0 |
| Letcher County | 4 | 12,355 | 3 | 0 |
| Lewis County | 3 | 16,363 | 0 | 0 |
| Lincoln County | 5 | 34,107 | 5 | 0 |
| Livingston County | 5 | 18,510 | 3 | 0 |
| Logan County | 8 | 30,393 | 4 | 0 |
| Lyon County | 5 | 13,970 | 1 | 0 |
| Madison County | 5 | 91,379 | 2 | 0 |
| Magoffin County | 2 | 11,954 | 2 | 0 |
| Marion County | 2 | 23,953 | 1 | 0 |
| Marshall County | 5 | 37,426 | 0 | 0 |
| Martin County | 1 | 9,003 | 1 | 0 |
| Mason County | 5 | 25,330 | 2 | 0 |
| McCracken County | 3 | 66,880 | 0 | 0 |
| McCreary County | 1 | 34,439 | 0 | 0 |
| McLean County | 7 | 8,591 | 3 | 1 |
| Meade County | 5 | 63,464 | 1 | 0 |
| Menifee County | 2 | 5,426 | 2 | 0 |
| Mercer County | 4 | 26,366 | 2 | 0 |
| Metcalfe County | 1 | 8,515 | 1 | 0 |
| Monroe County | 3 | 13,497 | 3 | 0 |
| Montgomery County | 6 | 34,363 | 5 | 0 |
| Morgan County | 2 | 9,869 | 2 | 1 |
| Muhlenberg County | 5 | 36,058 | 3 | 1 |
| Nelson County | 5 | 60,740 | 4 | 1 |
| Nicholas County | 4 | 14,742 | 3 | 0 |
| Ohio County | 5 | 25,943 | 5 | 1 |
| Oldham County | 2 | 48,476 | 0 | 0 |
| Owen County | 3 | 678,244 | 0 | 0 |
| Owsley County | 1 | 5,346 | 1 | 0 |
| Pendleton County | 5 | 15,554 | 2 | 0 |
| Perry County | 4 | 30,547 | 2 | 0 |
| Pike County | 3 | 55,418 | 2 | 0 |
| Powell County | 4 | 15,917 | 0 | 1 |
| Pulaski County | 8 | 102,144 | 3 | 0 |
| Robertson County | 2 | 5,289 | 2 | 0 |
| Rockcastle County | 5 | 21,448 | 0 | 0 |
| Rowan County | 3 | 34,317 | 2 | 0 |
| Russell County | 2 | 16,811 | 2 | 0 |
| Scott County | 1 | 44,608 | 0 | 0 |
| Shelby County | 4 | 53,306 | 0 | 0 |
| Simpson County | 2 | 40,548 | 0 | 0 |
| Spencer County | 1 | 22,286 | 0 | 0 |
| Taylor County | 1 | 24,874 | 0 | 1 |
| Todd County | 5 | 15,988 | 1 | 0 |
| Trigg County | 2 | 20,449 | 0 | 0 |
| Trimble County | 2 | 8,007 | 0 | 0 |
| Union County | 4 | 16,273 | 4 | 1 |
| Warren County | 2 | 144,719 | 0 | 0 |
| Washington County | 1 | 13,205 | 0 | 0 |
| Wayne County | 2 | 26,114 | 1 | 0 |
| Webster County | 7 | 15,474 | 5 | 1 |
| Whitley County | 5 | 41,263 | 3 | 0 |
| Wolfe County | 1 | 6,600 | 1 | 0 |
| Woodford County | 5 | 79,011 | 1 | 1 |
Largest systems
| System | Main county | People served | Main source | Health-based violations, 10 years | Unresolved | Lead lines |
|---|---|---|---|---|---|---|
| Louisville Water Company | Jefferson County and 1 other county | 764,769 | Surface water | 0 | 0 | 483 |
| Kentucky-American Water Co | Fayette County and 1 other county | 669,042 | Surface water | 0 | 0 | 28 |
| Northern Kentucky Water District | Kenton County and 1 other county | 259,949 | Surface water | 0 | 0 | 4,047 |
| Warren County Water District | Warren County | 91,118 | Purchased surface water | 0 | 0 | 0 |
| Hardin County Water District #2 | Hardin County | 76,326 | Surface water | 0 | 0 | 0 |
| Boone Co Water & Sewer District | Boone County | 66,300 | Purchased surface water | 0 | 0 | 1 |
| Paducah Water Works | McCracken County | 65,004 | Surface water | 0 | 0 | 121 |
| Owensboro Municipal Utilities | Daviess County | 60,473 | Groundwater | 0 | 0 | 0 |
| Bowling Green Municipal Utilities | Warren County | 53,601 | Surface water | 0 | 0 | 0 |
| Frankfort Plant Board | Franklin County and 1 other county | 52,153 | Surface water | 0 | 0 | 0 |
| Georgetown Municipal Water Service | Scott County | 44,608 | Surface water | 0 | 0 | 0 |
| Ashland Water Works | Boyd County | 44,402 | Surface water | 6 | 0 | 0 |
| Mountain Water Dist | Pike County | 44,057 | Surface water | 25 | 0 | 0 |
| Fort Campbell Water System | Christian County | 43,270 | Surface water | 0 | 0 | 0 |
| Hopkinsville Water Environment Authority | Christian County | 41,350 | Surface water | 0 | 0 | 0 |
Systems with unresolved health-based violations
29 systems| System | Main county | People served | Main source | Health-based violations, 10 years | Unresolved | Lead lines |
|---|---|---|---|---|---|---|
| North Manchester Water Assoc | Clay County | 5,332 | Purchased surface water | 6 | 4 | 0 |
| Lynch Water Works | Harlan County | 1,078 | Surface water | 2 | 4 | 1 |
| Beattyville Water Works | Lee County | 8,428 | Surface water | 2 | 2 | 0 |
| Sebree Water Department | Webster County | 1,743 | Purchased surface water | 1 | 2 | 0 |
| Benham Water Plant | Harlan County | 855 | Surface water | 2 | 2 | 0 |
| Center Ridge Water System | Calloway County | 273 | Groundwater | 1 | 2 | 0 |
| Center Ridge Water District #3 | Calloway County | 208 | Groundwater | 1 | 2 | 0 |
| Trapps Water Company | Boone County | 200 | Groundwater | 0 | 2 | 0 |
| Center Ridge Water District #4 | Calloway County | 105 | Groundwater | 1 | 2 | 0 |
| Riverside 25 LLC | Boone County | 49 | Groundwater | 0 | 2 | 0 |
| Campbellsville Municipal Water | Taylor County | 24,874 | Surface water | 0 | 1 | 0 |
| Columbia/Adair Utilities District | Adair County | 22,113 | Surface water | 1 | 1 | 0 |
| Versailles Water System | Woodford County | 17,822 | Surface water | 2 | 1 | 0 |
| East Casey Co Water District | Casey County | 12,460 | Purchased surface water | 0 | 1 | 0 |
| Rattlesnake Ridge Water District | Carter County and 1 other county | 11,397 | Surface water | 5 | 1 | 0 |
| Morgan County Water District | Morgan County | 7,502 | Purchased surface water | 6 | 1 | 0 |
| Vine Grove Water Department | Hardin County | 6,703 | Purchased surface water | 1 | 1 | 0 |
| Stanton Water Works | Powell County | 6,611 | Purchased surface water | 0 | 1 | 0 |
| Bloomfield Water & Sewer Dept | Nelson County | 5,771 | Purchased surface water | 2 | 1 | 0 |
| Greenville Utilities Commission | Muhlenberg County | 5,649 | Surface water | 3 | 1 | 19 |
| Sturgis Water Works | Union County | 3,490 | Purchased surface water | 8 | 1 | 0 |
| Hickman Water Department | Fulton County | 3,191 | Groundwater | 1 | 1 | 0 |
| Evarts Municipal Water Plant | Harlan County | 3,059 | Groundwater under direct influence | 2 | 1 | 0 |
| Sacramento Water Works | McLean County | 2,435 | Purchased surface water | 3 | 1 | 0 |
| Black Mtn Utility/Dayhoit | Harlan County | 1,954 | Purchased surface water | 1 | 1 | 0 |
| White Plains Water System | Hopkins County | 1,871 | Groundwater | 1 | 1 | 0 |
| Green Hills Water District | Harlan County | 1,443 | Purchased surface water | 0 | 1 | 0 |
| Fordsville Water District | Ohio County | 927 | Purchased surface water | 3 | 1 | 0 |
| Center Ridge Water District #2 | Calloway County | 377 | Groundwater | 1 | 1 | 0 |
Counties come from the counties EPA lists each system serving, matched to 2024 Census counties; where EPA lists none, from the county coded in the system's ID, its service area map, or its mailing address. A county holding at least a fifth of a system's service area map is added when at least a fifth of that map lies in those counties. Towns are the ones EPA lists and the Census places such a map covers, always inside those counties. In New England, where EPA's town names a whole Town, it is not matched to the village of the same name. A system is not listed in a county holding less than a fifth of its map, or in a county or town its map reaches when the map lies mostly outside the counties EPA lists, so a page can leave out a system that serves part of the area. Methodology and limitations