We found 21 public water systems that could serve the same population as Ky Turnpike Water District #1 (ordered by population size).
| Name | Areas served | Population served | Contaminant count | Violation count |
|---|---|---|---|---|
| Louisville Water Co/payne | Louisville | 127,455 | 0 | 0 |
| Pure Ice Company | Louisville | 2,000 | 0 | 0 |
| West Oldham Utilities | Louisville | 1,650 | 0 | 0 |
| Kentucky Bubbling Spring Inc | Louisville | 1,000 | 0 | 0 |
| I-64 Rest Area Seven Mile Pike | Louisville | 1,000 | 0 | 0 |
| Wax Marina & Lodge | Louisville | 400 | 0 | 0 |
| E I Du Pont De Nemours & Co | Louisville | 400 | 0 | 0 |
| American Synthetic Rubber | Louisville | 200 | 0 | 0 |
| Samuels Springs Water Company | Louisville | 100 | 0 | 0 |
| Schenley Dist/town Creek | Louisville | 100 | 0 | 0 |
| Old Ky Home Boy Scout Council | Louisville | 50 | 0 | 0 |
| Schenley Dist/long Lick Creek | Louisville | 50 | 0 | 0 |
| Florida Steel Corp | Louisville | 40 | 0 | 0 |
| Pennyroyal Girl Scout Camp | Louisville | 27 | 0 | 0 |
| Vertrees Chevron Station | Louisville | 26 | 0 | 0 |
| Louisville Gas/elec(otter Crk) | Louisville | 25 | 0 | 0 |
| Louisville Gas/elec (spring) | Louisville | 25 | 0 | 0 |
| Riverview Inn | Louisville | 15 | 0 | 0 |
| 24-karat | Louisville | 13 | 0 | 0 |
| Tyler Mountain Spring Water Co | Louisville | 0 | 0 | 0 |
| Tyler Mountain Water Company | Louisville | 0 | 0 | 0 |