| Ballard County | ||
| City of Barlow | Water | Sewer |
| City of Kevil | Water | Sewer |
| City of Lacenter | Water | Sewer |
| Lovelaceville Water | Water | |
| City of Wickliffe | Water | Sewer |
| Calloway County | ||
| Center Ridge Water | Water | |
| Dexter-Almo Water District | Water | |
| City of Murray | Water | Sewer |
| Murray Water #2 | Water | |
| Murray Water #3 | Water | |
| South 641 Water & Sewer | Water | Sewer |
| Carlisle County | ||
| City of Arlington | Water | Sewer |
| City of Bardwell | Water | Sewer |
| Cunningham Water District | Water | |
| Milburn Water District | Water | |
| Fulton County | ||
| City of Fulton | Water | Sewer |
| City of Hickman | Water | Sewer |
| Graves County | ||
| Consumer Water District | Water | |
| Fancy Farm Water & Sewer | Water | Sewer |
| Hardeman Water District | Water | |
| Hickory Water District | Water | |
| Highland Club Estates | Sewer | |
| Holifield Heights | Sewer | |
| Mayfield Electric & Water | Water | Sewer |
| Sedalia Water District | Water | |
| South Graves Water District | Water | |
| Symonsia Water & Sewer | Water | Sewer |
| Thomas Country Estates | Sewer | |
| Wingo Water & Sewer | Water | Sewer |
| Hickman County | ||
| City of Clinton | Sewer | |
| Columbus Water Works | Water | |
| Water Service Corporation of Kentucky | Water | |
| Marshall County | ||
| City of Benton | Water | Sewer |
| City of Calvert City | Water | Sewer |
| Golden Acres | Sewer | |
| Hardin Water & Sewer | Water | Sewer |
| Jonathan Creek Water District | Water | |
| Marshall County SD #1 | Sewer | |
| Marshall County SD #2 | Sewer | |
| North Marshall Water District | Water | |
| McCracken County | ||
| Blandville West | Sewer | |
| Great Oaks | Sewer | |
| Hendron Water District | Water | |
| Paducah/McCracken Joint Sewer Agency | Sewer | |
| Paducah Water Works | Water | |
| West McCracken Water District | Water |
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