Permits are required to build, erect, alter, replace, operate, use or maintain existing point sources of water pollution. A master general permit is one permit issued to multiple locations where activities are similar enough to be covered by a single set of requirements. However, most wastewater permits are site-specific, meaning one permit is issued to one location to reflect the unique nature of that specific wastewater, stormwater or the receiving water. 

As a permit nears its expiration, it is redrafted, modified if needed and made available for public review and comment. The department reviews all public comments before making a decision about the permit.

If a permittee submits a timely and sufficient application to renew a permit and, through no fault of the permittee, the department is unable to issue the renewed permit before the current permit expires, Code of State Regulations 10 CSR 20-6.015(10)(C) allows the permit to be administratively continued. The terms and conditions of the expired permit remain in effect until the department issues or denies the permit renewal.

Currently Effective Permits

The following table contains electronic copies of all currently effective site-specific wastewater permits — not master general permits — issued by the department. This includes Concentrated Animal Feeding Operation (CAFO) permits, stormwater permits, wastewater permits and underground injection control well permits. These facilities have been authorized to either discharge to waters of the state, or to operate a no-discharge wastewater treatment facility. The department adds each site specific wastewater permit as it is issued.

To sort the table below by field, click on the column headings in the table. You can also enter criteria in the search boxes to search for a specific wastewater permit. If you cannot find the information you are looking for, please submit an Open Records/ Sunshine Law Request.

Permits issued before April 24, 2026, have been archived as per Missouri’s Website Content Standards. The Missouri Department of Natural Resources is aware that these permits do not meet current WCAG-Level AA accessibility standards. To request an accessible version, please fill out the department’s Report Accessibility Issues form and a member of our team will be in contact with you.

*This is an "and" type search. All search criteria you enter must be met for the permit to appear in the results. If the permit you are searching for is not listed in the results, try again using less criteria.

Effective Date Between
Permit Number Applicant/ Facility County Sort descending Effective Date Expiration Date Type
UI0000044 Ameren Missouri-Sioux Energy Center St. Charles Operating
MO0000353 Ameren Missouri-Sioux Energy Center St. Charles Operating
MO0121363 Augusta Wastewater Treatment Facility St. Charles Operating
MO0135208 The Boeing Company (Tract 5) St. Charles Operating
MO0117188 Cherokee Lakes Campground Wastewater Treatment Facility St. Charles Operating
MO0120529 Duckett Creek Sanitary District-Augusta Shores Wastewater Treatment Plant St. Charles Operating
MO0116572 Duckett Creek Sanitary District-Treatment Plant No. 2 St. Charles Operating
MO0129763 Duckett Creek Sanitary District-Steven A. Rogers Wastewater Treatment Plant St. Charles Operating
MO0132152 Duckett Creek Sanitary District-Riverdale Subdivision Wastewater Treatment Facility St. Charles Operating
MO0085472 Duckett Creek Sanitary District-Treatment Plant No. 1 St. Charles Operating
MO0131300 Duckett Creek Sanitary District-Wyndgate Subdivision Wastewater Treatment Plant St. Charles Operating
MO0111627 Duck Club Yacht Club Wastewater Treatment Facility St. Charles Operating
MO0118559 Orchard Farms Apartments Wastewater Treatment Facility St. Charles Operating
MO0098060 Fabick Foristell Wastewater Treatment Facility St. Charles Operating
MO0119890 Fiddlestix Wastewater Treatment Plant St. Charles Operating
MO0116114 Foristell Interim Wastewater Treatment Plant St. Charles Operating
MO0100153 General Motors Wentzville Assembly Center St. Charles Operating
MO0137642 Huster Substation St. Charles Operating
MO0132373 Missouri-American Water Co.-Jaxson Estates Wastewater Treatment Facility St. Charles Operating
MO0129127 Klondike Park Wastewater Treatment Facility St. Charles Operating
MO0000299 MEMC LLC St. Charles Operating
MO0129623 O'Fallon Water Treatment Plant St. Charles Operating
MO0028720 O'Fallon Wastewater Treatment Plant St. Charles Operating
MO0107328 Portage Des Sioux Wastewater Treatment Facility St. Charles Operating
MO0087718 Weldon Springs Drinking Water Treatment Plant St. Charles Operating
MO0058351 St. Charles Missouri River Wastewater Treatment Facility St. Charles Operating
MO0058343 St. Charles Mississippi River Wastewater Treatment Facility St. Charles Operating
MO0030970 St. Peters-Spencer Creek Sewage Treatment Plant St. Charles Operating
MO0132349 Stone Ridge Meadows Subdivision Wastewater Treatment Facility St. Charles Operating
MO0107701 U.S. Department of Energy-Weldon Spring Site St. Charles Operating
MO0093599 Wentzville Water Reclamation Center St. Charles Operating
MO0126594 St. Charles County Public Water Supply District No. 2-Boone Ridge Estates Wastewater Treatment Facility St. Charles Operating
MO0057801 St. Charles County Public Water Supply District No. 2-Castlegate Mobile Home Park and Providence Point Subdivision Wastewater Treatment Plant St. Charles Operating
MO0115461 St. Charles County Public Water Supply District No. 2-New Melle Sewage Treatment Plant St. Charles Operating
MO0128252 St. Charles County Public Water Supply District No. 2-Sycamore Creek Wastewater Treatment Facility St. Charles Operating
MO0139068 Quarry Wine Garden Wastewater Treatment Facility, The St. Charles Operating
MOGSE0430 Duckett Creek Sanitary District-Treatment Plant No. 4 St. Charles Construction
MOGSE0432 Timber Trace Phase 5 St. Charles Construction
MOGSE0419 New Town Merz Phase 1 and 2 St. Charles Construction
MOGSE0418 Jaxson Estates Subdivision Plat 7 St. Charles Construction
MOGSE0417 Brookside Lift Station St. Charles Construction
MOGSE0422 Hauk Estates St. Charles Construction
MOGSE0406 Creek Stone St. Charles Construction
CP0002284 Duckett Creek Sanitary District-Riverdale Subdivision St. Charles Construction
MOGSE0390 Willows, The St. Charles Construction
MOGSE0394 Waterways of Lake St. Louis, The St. Charles Construction
MOGSE0370 Riverpointe Phase 1 St. Charles Construction
MOGSE0339 Villages at Huntleigh Ridge Phase 2, Stage 1 St. Charles Construction
MOGSE0322 Aventura at Hawk Ridge St. Charles Construction
MOGSE0331 Sutton Farm Phase 1A St. Charles Construction