NPDES permits in Kansas
354 permits held by publicly owned wastewater treatment plants · issued by KDHE
Effective
353
Administratively continued
0
Expired
0
Total tracked
354
Kansas Department of Health and Environment (KDHE) runs the NPDES program in Kansas under delegation from EPA Region 7, issuing and enforcing the discharge permits listed here. Klarifi tracks 354 permits held by publicly owned treatment plants in the state, with status, expiry, design flow and three-year compliance for each. Agency website →
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.
Permit renewals by year
2029: 83 permits
2030: 74 permits
2031: 19 permits
Largest permit holders in Kansas
| Facility | City | Avg flow (MGD) | Design (MGD) | NPDES permit | Status | Expires | Violations (3y) |
|---|---|---|---|---|---|---|---|
| Kansas City Water Pollution Control Div. | Kansas City | 15.44 | — | KS0038563 | Effective | May 2030 | 0 |
| Joco Tomahawk Creek | Leawood | 12.13 | — | KS0100854 | Effective | Apr 2031 | 1 |
| Topeka Oakland Wastewater Plant | Topeka | 10.55 | — | KS0042722 | Effective | Jan 2027 | 63 |
| Joco Douglas Smith Mid Basin | Overland Park | 10.2 | — | KS0119601 | Effective | Feb 2027 | 0 |
| Joco Mill Creek Regional Wtf | Shawnee | 9.47 | — | KS0088269 | Effective | Jan 2030 | 0 |
| Joco Nelson Complex Wastewater Plant | Mission | 7.21 | — | KS0055492 | Effective | Jan 2030 | 50 |
| Lawrence, City Of | Lawrence | 6.02 | — | KS0038644 | Effective | Jul 2029 | 14 |
| Joco Blue River District #1 | Stanley | 5.14 | — | KS0092738 | Effective | Dec 2027 | 0 |
| Emporia Wastewater Treatment Plant | Emporia | 4.23 | — | KS0046728 | Effective | Apr 2028 | 27 |
| Salina, City Of | Salina | 3.98 | — | KS0038474 | Effective | Dec 2029 | 5 |
| Hutchinson, City Of | Hutchinson | 3.74 | — | KS0036188 | Effective | Dec 2028 | 16 |
| Olathe (cedar Creek) Wastewater Plant | Olathe | 3.74 | — | KS0081299 | Effective | Dec 2029 | 0 |
| City Of Coffeyville WTP | Coffeyville | 3.25 | — | KS0050733 | Effective | Dec 2026 | 22 |
| Leavenworth, City Of | Leavenworth | 3.18 | — | KS0036366 | Effective | Feb 2028 | 11 |
| Pittsburg City Of Mun WWTP | Pittsburg | 2.7 | — | KS0200022 | Effective | Jun 2028 | 68 |
| Kansas City (plant No.20) WWTP | Kansas City | 2.64 | — | KS0080195 | Effective | Dec 2026 | 74 |
| Wichita - Four Mile Creek - New | Wichita | 2.41 | — | KS0100790 | Effective | Dec 2026 | 10 |
| Garden City, City Of | Garden City | 2.38 | — | KS0038962 | Effective | Dec 2026 | 3 |
| Derby Wastewater Treatment | Derby | 2.19 | — | KS0050377 | Effective | Dec 2027 | 61 |
| Hays, City Of - Chetolah Creek Water Re | Hays | 2.04 | — | KS0100820 | Effective | Dec 2030 | 0 |
| Lawrence, City Of (wakarusa) | Lawrence | 1.94 | — | KS0099031 | Effective | Aug 2029 | 0 |
| Winfield, City Of | Winfield | 1.87 | — | KS0051926 | Effective | Nov 2030 | 49 |
| Junction City Wastewater Department | Junction City | 1.84 | — | KS0034011 | Effective | Dec 2026 | 44 |
| Gardner - Kill Creek | Gardner | 1.83 | — | KS0095605 | Effective | Oct 2026 | 79 |
| Arkansas City Mwwtp | Arkansas City | 1.61 | — | KS0044831 | Effective | Feb 2028 | 12 |
NPDES permits in Kansas: 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 September 11, 2026.