19 NPDES permits · 9 MGD combined average flow
19 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 | Violations (3y) |
|---|---|---|---|---|---|
| Montgomery County Sanitation District #2 | Jeffersonville | 0.47 | KY0069736 | May 2026 | 5 |
| Taylorsville STP | Taylorsville | 0.33 | KY0028142 | May 2026 | 0 |
| Fancy Farm Water District STP | Fancy Farm | 0.08 | KY0053562 | May 2026 | 53 |
| Cynthiana STP (new) | Cynthiana | 0.87 | KY0105856 | Jun 2026 | 0 |
| Sandy Hook STP | Sandy Hook | 0.28 | KY0052264 | Jun 2026 | 35 |
| Ledbetter Sanitation District #1 | Ledbetter | 0.17 | KY0100251 | Jun 2026 | 13 |
| Mayfield Electric & Water Systems | Mayfield | 0.0015 | KY0055221 | Jun 2026 | 2 |
| Mckee STP | Mckee | 0.27 | KY0034444 | Jul 2026 | 283 |
| Northern Madison County Sanitation District | Richmond | 0.24 | KY0105376 | Jul 2026 | 1 |
| Benham STP | Benham | 0.16 | KY0025755 | Jul 2026 | 410 |
| Butler STP | Butler | 0.04 | KY0021041 | Jul 2026 | 51 |
| Lebanon Junction STP | Lebanon Junction | 0.22 | KY0104043 | Aug 2026 | 79 |
| Strodes Creek STP | Winchester | 4.5 | KY0037991 | Sep 2026 | 1 |
| Carlisle Co Regional STP | Bardwell | 0.22 | KY0102156 | Oct 2026 | 41 |
| Crofton WWTP | Crofton | 0.2 | KY0066591 | Oct 2026 | 0 |
| Sacramento STP | Sacramento | 0.02 | KY0091731 | Oct 2026 | 13 |
| Oak Grove, City Of | Oak Grove | 0.52 | KY0094056 | Dec 2026 | 6 |
| Falmouth STP (new) | Falmouth | 0.44 | KY0106267 | Dec 2026 | 261 |
| Munfordville STP | Munfordville | 0.15 | KY0031755 | Dec 2026 | 89 |
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: NPDES permit · POTW · Biological nutrient removal · Tertiary treatment · WWTP · Biosolids · all terms
Cite this page
Journalists, researchers and educators are welcome to quote these figures. Please credit Klarifi as the source and link to this page.
Klarifi. “NPDES permits expiring in 2026: Kentucky wastewater plants.” Updated October 26, 2026. https://klarifi.io/facilities/kentucky/permits-expiring/2026Need a custom cut of the data for a state, a county or a list of plants? Email info@klarifi.io.