Indiana wastewater permits expiring in 2028
91 NPDES permits · 52 MGD combined average flow
91 publicly owned wastewater treatment plants in Indiana hold NPDES permits that expire during 2028, issued by Indiana Department of Environmental Management. 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) |
|---|---|---|---|---|---|---|
| Pittsboro WWTP | Pittsboro | 0.59 | IN0020401 | Jan 2028 | Clarifiers, Carrousels / oxidation ditches | 21 |
| Roachdale Municipal WWTP | Roachdale | 0.05 | IN0020052 | Jan 2028 | Clarifiers | 7 |
| New Whiteland Waste Water Tre | New Whiteland | 0.26 | IN0020966 | Feb 2028 | Aerated lagoons | 30 |
| Brookville WWTP | Brookville | 0.23 | IN0022446 | Feb 2028 | Uncovered lagoons, Carrousels / oxidation ditches | 1 |
| Paoli Municipal WWTP | Paoli | 0.19 | IN0024023 | Feb 2028 | Clarifiers | 91 |
| Romney Rsd WWTP | Romney | 0.01 | IN0064599 | Feb 2028 | — | 2 |
| Swayzee Wwtp, Town Of | Swayzee | 0.1 | IN0037001 | Mar 2028 | Uncovered lagoons | 80 |
| Palmyra WWTP | Palmyra | 0.08 | IN0039403 | Mar 2028 | Clarifiers, Aerated lagoons, Uncovered lagoons | 64 |
| Jamestown WWTP | Jamestown | 0.05 | IN0021318 | Mar 2028 | — | 0 |
| Lauramie Township Rsd | Stockwell | 0.03 | IN0061964 | Mar 2028 | — | 1 |
| Wingate Municipal WWTP | Wingate | 0.0076 | IN0040771 | Mar 2028 | Aerated lagoons, Uncovered lagoons | 69 |
| Plainfield North Water Pollution Control Facility | Plainfield | 1.77 | IN0021202 | Apr 2028 | Clarifiers, Uncovered lagoons, Biogas balloons | 9 |
| Rising Sun, City Of | Rising Sun | 0.18 | IN0024431 | Apr 2028 | Clarifiers | 2 |
| West Lakes Regional Sewer District | Wawaka | 0.07 | IN0063088 | Apr 2028 | — | 8 |
| Mooreland Env. Control Center WWTP | Mooreland | 0.03 | IN0040398 | Apr 2028 | Uncovered lagoons | 8 |
| Huntington WWTP | Huntington | 1.68 | IN0023132 | May 2028 | Biogas silos | 7 |
| Portland WWTP | Portland | 0.88 | IN0020095 | May 2028 | Clarifiers, Uncovered lagoons, Biogas silos, Biogas balloons | 52 |
| Syracuse Water Company-Treatment Plant #4 | Syracuse | 0.37 | IN0021172 | May 2028 | Clarifiers, Carrousels / oxidation ditches | 18 |
| Turkey Creek Regional Sewer District-Treatment Plant | Cromwell | 0.24 | IN0045802 | May 2028 | Clarifiers, Carrousels / oxidation ditches | 14 |
| Mapleturn Utilities, Inc.-Treatment Plant | Martinsville | 0.1 | IN0049361 | May 2028 | — | 8 |
| Bunker Hill Wwtp, Town Of | Bunker Hill | 0.04 | IN0020206 | May 2028 | — | 3 |
| Bainbridge Municipal WWTP | Bainbridge | 0.04 | IN0040941 | May 2028 | Aerated lagoons | 16 |
| Uniondale WWTP | Uniondale | 0.0093 | IN0051098 | May 2028 | — | 2 |
| Washington WWTP | Washington | 2.46 | IN0025658 | Jun 2028 | Clarifiers, Aerated lagoons, Uncovered lagoons, Carrousels / oxidation ditches | 132 |
| Town Of Clarksville Public Works Facility | Clarksville | 2.2 | IN0047058 | Jun 2028 | Clarifiers, Carrousels / oxidation ditches, Biogas silos | 1 |
| Bicknell Municipal WWTP | Bicknell | 0.67 | IN0039276 | Jun 2028 | Clarifiers, Carrousels / oxidation ditches | 19 |
| Whiteland WWTP | Whiteland | 0.51 | IN0021415 | Jun 2028 | Clarifiers, Carrousels / oxidation ditches | 15 |
| Churubusco Municipal STP | Churubusco | 0.34 | IN0021113 | Jun 2028 | Clarifiers, Uncovered lagoons, Carrousels / oxidation ditches | 17 |
| Middletown WWTP | Middletown | 0.32 | IN0020770 | Jun 2028 | Clarifiers, Biogas balloons | 79 |
| Corydon WWTP | Corydon | 0.29 | IN0020893 | Jun 2028 | Clarifiers, Carrousels / oxidation ditches, Biogas silos | 23 |
| Knightstown WWTP | Knightstown | 0.28 | IN0040177 | Jun 2028 | Clarifiers | 21 |
| Osgood WWTP | Osgood | 0.13 | IN0021695 | Jun 2028 | Clarifiers, Carrousels / oxidation ditches | 23 |
| South Whitley WWTP | South Whitley | 0.13 | IN0020567 | Jun 2028 | Clarifiers | 0 |
| Dale Municipal WWTP | Dale | 0.1 | IN0021598 | Jun 2028 | Clarifiers, Carrousels / oxidation ditches | 0 |
| Michigantown Municipal WWTP | Michigantown | 0.04 | IN0040355 | Jun 2028 | Uncovered lagoons | 9 |
| Greens Fork WWTP | Greens Fork | 0.03 | IN0061841 | Jun 2028 | — | 4 |
| Fulton Municipal WWTP | Fulton | 0.03 | IN0060101 | Jun 2028 | Aerated lagoons, Uncovered lagoons | 8 |
| Jefferson Township Rsd | Otwell | 0.02 | IN0046361 | Jun 2028 | Uncovered lagoons | 1 |
| Hartsville WWTP | Hartsville | 0.009 | IN0021075 | Jun 2028 | Clarifiers | 2 |
| Shoals WWTP | Shoals | — | IN0040631 | Jul 2028 | Uncovered lagoons | 28 |
| Lafayette WWTP | Lafayette | 15.2 | IN0032468 | Jul 2028 | Clarifiers, Uncovered lagoons, Biogas silos | 0 |
| Schererville WWTP | Schererville | 4.75 | IN0024457 | Jul 2028 | Clarifiers, Biogas silos | 8 |
| Salem WWTP | Salem | 0.69 | IN0021644 | Jul 2028 | Clarifiers, Aerated lagoons, Uncovered lagoons | 34 |
| Gas City WWTP | Gas City | 0.54 | IN0022985 | Jul 2028 | Clarifiers, Carrousels / oxidation ditches | 2 |
| Morgantown Water Utility-Treatment Plant #1 | Morgantown | 0.07 | IN0036820 | Jul 2028 | — | 31 |
| Leavenworth WWTP | Leavenworth | 0.06 | IN0021121 | Jul 2028 | Clarifiers, Aerated lagoons | 8 |
| Lynnville WWTP | Lynnville | 0.06 | IN0040282 | Jul 2028 | — | 3 |
| Denver Municipal WWTP | Denver | 0.03 | IN0039934 | Jul 2028 | Clarifiers | 1 |
| Glenwood WWTP | Glenwood | 0.02 | IN0061778 | Jul 2028 | Uncovered lagoons | 5 |
| Stilesville WWTP | Stilesville | 0.01 | IN0059986 | Jul 2028 | Uncovered lagoons | 0 |
| Gentryville WWTP | Gentryville | — | IN0060038 | Jul 2028 | Uncovered lagoons | 1 |
| Covington WWTP | Covington | 0.16 | IN0025828 | Aug 2028 | Clarifiers | 0 |
| Topeka WWTP | Topeka | 0.15 | IN0021571 | Aug 2028 | Clarifiers, Biogas balloons | 37 |
| Eaton WWTP | Eaton | 0.12 | IN0021652 | Aug 2028 | Clarifiers, Aerated lagoons, Carrousels / oxidation ditches | 24 |
| Frankton WWTP | Frankton | 0.12 | IN0020028 | Aug 2028 | Clarifiers, Carrousels / oxidation ditches | 5 |
| Mulberry WWTP | Mulberry | 0.08 | IN0031976 | Aug 2028 | — | 10 |
| Cromwell WWTP | Cromwell | 0.07 | IN0021814 | Aug 2028 | Clarifiers, Carrousels / oxidation ditches | 1 |
| Windfall WWTP | Windfall | 0.05 | IN0040762 | Aug 2028 | Uncovered lagoons | 91 |
| Western Wayne Regional Sewer District WWTP | Cambridge City | 0.88 | IN0054402 | Sep 2028 | Uncovered lagoons, Carrousels / oxidation ditches | 3 |
| Odon WWTP | Odon | 0.23 | IN0020214 | Sep 2028 | Clarifiers, Uncovered lagoons | 11 |
| Lakeland Regional Sewer District | Warsaw | 0.14 | IN0064131 | Sep 2028 | Aerated lagoons | 3 |
| Holland WWTP | Holland | 0.07 | IN0023108 | Sep 2028 | Aerated lagoons, Uncovered lagoons | 36 |
| Boswell WWTP | Boswell | 0.04 | IN0039756 | Sep 2028 | — | 6 |
| Moores Hill WWTP | Moores Hill | 0.03 | IN0023817 | Sep 2028 | Clarifiers, Carrousels / oxidation ditches | 8 |
| Shirley WWTP | Shirley | — | IN0024503 | Sep 2028 | Uncovered lagoons | 18 |
| Tipton/ Getrag Division E WWTP | Tipton | — | IN0063215 | Sep 2028 | Clarifiers, Aerated lagoons, Biogas silos | 15 |
| Dyer Wastewater Treatment Plant | Dyer | 1.24 | IN0039331 | Oct 2028 | Clarifiers, Carrousels / oxidation ditches | 1 |
| Mitchell Wastewater Treatment Plant | Mitchell | 0.39 | IN0023787 | Oct 2028 | Clarifiers, Uncovered lagoons, Carrousels / oxidation ditches | 4 |
| Hebron Wastewater Treatment Plant | Hebron | 0.21 | IN0020061 | Oct 2028 | Clarifiers, Aerated lagoons | 5 |
| Williamsport Wastewater Treatment Plant | Williamsport | — | IN0024864 | Oct 2028 | Clarifiers, Carrousels / oxidation ditches | 0 |
| Carmel WWTP | Indianapolis | 7.22 | IN0022497 | Nov 2028 | — | 0 |
| Patoka Lake Regional Water-Treatment Plant #1 | Dubois | 0.38 | IN0052698 | Nov 2028 | Clarifiers, Aerated lagoons, Carrousels / oxidation ditches | 9 |
| Union City WWTP | Union City | 0.3 | IN0020982 | Nov 2028 | Clarifiers, Biogas silos | 0 |
| Walkerton Municipal WWTP | Walkerton | 0.22 | IN0040690 | Nov 2028 | Aerated lagoons, Uncovered lagoons | 16 |
| Fountain City Water Works | Fountain City | 0.21 | IN0040029 | Nov 2028 | Uncovered lagoons | 5 |
| Galveston Wastewater Treatment Plant | Galveston | 0.06 | IN0021199 | Nov 2028 | Clarifiers, Carrousels / oxidation ditches | 2 |
| Bryant WWTP | Bryant | 0.0079 | IN0055158 | Nov 2028 | Uncovered lagoons | 17 |
| Rockfield Regional Sewer District Wastewater Treatment Plant | Rockfield | 0.0058 | IN0061921 | Nov 2028 | — | 9 |
| English WWTP | English | — | IN0039993 | Nov 2028 | Carrousels / oxidation ditches | 48 |
| La Crosse Wastewater Treatment Plant | La Crosse | — | IN0040193 | Nov 2028 | Uncovered lagoons | 62 |
| Bedford Wastewater Treatment Plant | Bedford | 1.42 | IN0025623 | Dec 2028 | Clarifiers, Biogas silos, Biogas balloons | 4 |
| Zionsville WWTP | Zionsville | 0.86 | IN0036951 | Dec 2028 | Clarifiers, Carrousels / oxidation ditches, Biogas silos | 10 |
| Dunkirk WWTP | Dunkirk | 0.47 | IN0021491 | Dec 2028 | Clarifiers, Uncovered lagoons | 60 |
| Fremont Wastewater Treatment Plant | Fremont | 0.28 | IN0022942 | Dec 2028 | Clarifiers, Uncovered lagoons | 4 |
| Attica Municipal WWTP | Attica | 0.17 | IN0020222 | Dec 2028 | Uncovered lagoons, Carrousels / oxidation ditches, Biogas balloons | 8 |
| New Pekin Wastewater Treatment Plant | Pekin | 0.1 | IN0021059 | Dec 2028 | Uncovered lagoons | 1 |
| Sunman Waste Water Treatment | Sunman | 0.1 | IN0021679 | Dec 2028 | Aerated lagoons, Uncovered lagoons | 141 |
| Waldron Conservancy District | Waldron | 0.06 | IN0024783 | Dec 2028 | Uncovered lagoons | 38 |
| Anderson Township Regional Sewer Dist. | Milroy | 0.05 | IN0109746 | Dec 2028 | Uncovered lagoons | 6 |
| Carbon Municipal STP | Carbon | 0.0097 | IN0039829 | Dec 2028 | Uncovered lagoons | 5 |
| Pipe Creek Rest Area I-69 | Gaston | 0.0049 | IN0031356 | Dec 2028 | — | 0 |
Indiana permit renewals in 2028: 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.