20 NPDES permits · 7 MGD combined average flow
20 publicly owned wastewater treatment plants in Kentucky hold NPDES permits that expire during 2026, issued by Kentucky Energy and Environment Cabinet, Division of Water. The table lists each plant with its permit number, expiry month, average flow, treatment technology and three-year violation count, in order of expiry.
An NPDES permit runs for five years. To keep discharging, a plant must apply for renewal at least 180 days before the expiry date, and the renewed permit usually arrives with tighter effluent limits, new monitoring requirements or a compliance schedule. That is why the year a permit expires is the year a plant starts budgeting for upgrades: nutrient removal, disinfection, capacity or controls.
| Facility | City | Avg flow (MGD) | NPDES permit | Expires | Technology | Violations (3y) |
|---|---|---|---|---|---|---|
| Taylorsville STP | Taylorsville | 0.22 | KY0028142 | May 2026 | Aerated lagoons, Covered lagoons, Uncovered lagoons | 0 |
| Montgomery County Sanitation District #2 | Jeffersonville | 0.08 | KY0069736 | May 2026 | Clarifiers, Carrousels / oxidation ditches | 5 |
| Fancy Farm Water District STP | Fancy Farm | 0.07 | KY0053562 | May 2026 | Aerated lagoons | 53 |
| Cynthiana STP (new) | Cynthiana | 0.93 | KY0105856 | Jun 2026 | Clarifiers, Carrousels / oxidation ditches | 1 |
| Sandy Hook STP | Sandy Hook | 0.22 | KY0052264 | Jun 2026 | Clarifiers, Carrousels / oxidation ditches | 32 |
| Ledbetter Sanitation District #1 | Ledbetter | 0.09 | KY0100251 | Jun 2026 | Aerated lagoons | 13 |
| Loyall STP | Loyall | — | KY0026115 | Jun 2026 | Clarifiers, Aerated lagoons | 103 |
| Mckee STP | Mckee | 0.34 | KY0034444 | Jul 2026 | Clarifiers | 289 |
| Northern Madison County Sanitation District | Richmond | 0.2 | KY0105376 | Jul 2026 | — | 1 |
| Benham STP | Benham | 0.1 | KY0025755 | Jul 2026 | Clarifiers | 414 |
| Butler STP | Butler | 0.04 | KY0021041 | Jul 2026 | — | 52 |
| Lebanon Junction STP | Lebanon Junction | 0.1 | KY0104043 | Aug 2026 | Aerated lagoons | 3 |
| Strodes Creek STP | Winchester | 3.18 | KY0037991 | Sep 2026 | Clarifiers, Uncovered lagoons, Carrousels / oxidation ditches | 2 |
| Hawesville STP | Hawesville | 0.12 | KY0020087 | Sep 2026 | — | 9 |
| Crofton WWTP | Crofton | 0.05 | KY0066591 | Oct 2026 | Aerated lagoons, Uncovered lagoons | 0 |
| Sacramento STP | Sacramento | 0.01 | KY0091731 | Oct 2026 | Aerated lagoons, Uncovered lagoons | 14 |
| Carlisle Co Regional STP | Bardwell | — | KY0102156 | Oct 2026 | — | 45 |
| Oak Grove, City Of | Oak Grove | 0.59 | KY0094056 | Dec 2026 | Clarifiers, Carrousels / oxidation ditches | 6 |
| Falmouth STP (new) | Falmouth | 0.25 | KY0106267 | Dec 2026 | Clarifiers, Aerated lagoons, Uncovered lagoons | 264 |
| Munfordville STP | Munfordville | 0.13 | KY0031755 | Dec 2026 | Clarifiers | 88 |
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 September 11, 2026.