Chlorine disinfection: wastewater treatment plants in Kentucky
18 plants · 9% of the state · 12 MGD combined
Klarifi identifies 18 publicly owned wastewater treatment plants with chlorine disinfection in Kentucky, 9% of the 195 plants in the state (12 MGD combined). The largest is Valley Creek Wastewater Treatment Plant in Elizabethtown at 6.45 MGD.
Chlorine or chloramine disinfection, often followed by dechlorination before discharge, remains the most common effluent disinfection in the United States. Plants on gas chlorine are candidates for conversion to hypochlorite or UV, a recurring capital project driven by safety rules and permit limits on residual chlorine.
The largest plants with chlorine disinfection in Kentucky
| # | Facility | City | Avg flow (MGD) | NPDES permit | Expires | Violations (3y) |
|---|---|---|---|---|---|---|
| 1 | Valley Creek Wastewater Treatment Plant | Elizabethtown | 6.45 | KY0022039 | Oct 2023 | 1 |
| 2 | Harrodsburg WWTP Expansion | Harrodsburg | 1.84 | KY0027421 | Dec 2027 | 69 |
| 3 | Ky State Reformatory | La Grange | 0.79 | KY0040126 | Nov 2022 | 45 |
| 4 | Vine Grove STP | Vine Grove | 0.58 | KY0024988 | Aug 2031 | 22 |
| 5 | Flemingsburg STP | Flemingsburg | 0.5 | KY0021229 | Jul 2028 | 13 |
| 6 | Sturgis STP | Sturgis | 0.25 | KY0025895 | May 2028 | 4 |
| 7 | Lake City WWTP | Grand Rivers | 0.23 | KY0110795 | Sep 2029 | 3 |
| 8 | Elkton STP | Elkton | 0.22 | KY0023442 | Aug 2029 | 18 |
| 9 | Grant County STP | Dry Ridge | 0.22 | KY0091634 | Oct 2028 | 22 |
| 10 | Vanceburg STP | Vanceburg | 0.16 | KY0021512 | Jun 2027 | 3 |
Contacts and project signals for every plant on this list
Klarifi adds verified decision-maker contacts, permit limits, discharge monitoring data and the capital projects planned in each city, filterable by technology, size and compliance record.
Other technologies in Kentucky
Chlorine disinfection in other states
Chlorine disinfection in Kentucky: questions
Sources and methodology
Flow, permit and violation figures come from the EPA's ICIS-NPDES discharge monitoring records. Population served comes from the Clean Watersheds Needs Survey 2022. Treatment structures are identified by Klarifi's review of aerial imagery, and capital improvement projects are extracted from published municipal budget documents. Violations are counted over the last three years of monitoring reports.
Data refreshed October 26, 2026.
Wastewater terms: Tertiary treatment · Ozonation · WWTP · NPDES permit · POTW · all terms