Permits are required to build, erect, alter, replace, operate, use or maintain existing point sources of water pollution. The majority of our permits are for discharging treated wastewater from domestic and industrial facilities. We also issue permits for discharging regulated stormwater and land application of wastes from domestic, industrial and agricultural facilities. Most wastewater permits are written to be site-specific, issued to that one location to reflect the unique nature of the wastewater, stormwater or the receiving water. To view electronic copies of all currently effective site-specific wastewater permits, visit Issued Site-Specific Wastewater Permits

Master general permits, as opposed to site-specific permits, are issued to multiple locations where activities are similar enough to be covered by a single set of requirements. All facilities receiving a general permit must follow the conditions contained in that general permit until it expires or until the facility obtains a site-specific permit. As a master general permit nears its expiration, the conditions are redrafted, modified if needed and made available for public review and comment. After finalization, a general permit cannot be modified.

*General permits for airports, limestone and rock quarries, lubricant manufacturing and petroleum storage greater than 50,000 gallons are required to be made available for public review and comment before issuance to a new facility.

Note: There are two general sewer extension construction permits, MO-GC00000 and MO-GSE0000. The department alternates between the two permits so all sewer extensions can be issued for enough time before the permit expires — one will be expired while we use the other.

Proposed New Permits

This is the official Notice of Intent for permit development. As each proposed new master general permit is developed, information about public meetings and comment periods will be included below. If you have any questions regarding these proposed permits, please contact the department's permitting staff by telephone at 573-526-3337 or email at dnr.generalpermits@dnr.mo.gov.

MO-G490000 Limestone Quarries

The department will not be renewing Master General Permit MO-G490000. Instead, the department is developing four new master general permits to cover the industries currently under MO-G490000. More information is available in the department's Clean Water Aggregate Permitting, MO-G49 Renewal and the Introduction of Three New General Permits presentation. 

MO-G822000 Land Application of Food Processing Wastewater

The department will not be renewing Master General Permit MO-G822000. Instead, the department is developing four new master general permits in response to the new additions in Missouri Clean Water Law regarding land application of industrial wastewater and wastewater treatment residuals.

Land Application and Composting General Permit Public Meeting, May 19, 2026

  • MO-PA00000 Land Application Annual Soil Analysis Method - Surficial land application of industrial wastewater and wastewater treatment residuals from commercial food production industries, eating places and industrial process wastewater composting facilities using the University of Missouri (MU) Annual Soil Analysis method for determining loading rates of surficial land application.
  • MO-P100000 Land Application P-Index Single Year Method - Surficial Land application of industrial wastewater and wastewater treatment residuals from commercial food production industries, eating places and industrial process wastewater composting facilities using the Missouri Phosphorus Index (P-Index) single field management plan for determining loading rates of land application.
  • MO-P500000 Land Application P-Index Five Year Method - Surficial land application of industrial wastewater and wastewater treatment residuals from commercial food production industries, eating places and industrial process wastewater composting facilities using the Missouri Phosphorus Index (P-Index) Five-Year field management plan for determining loading rates of land application.
  • MO-UI00000 Underground Injection - Subsurface dispersal of industrial process wastewater and wastewater treatment residuals from various industries.

Master General Permits

Permit Effective Date Expiration Date Additional Files Description
MO-G840000 Clay Mining and Processing Form E - Application for General Permit Under Missouri Clean Water Law MO 780-0…

SIC #1455 and 1459

Mine dewatering discharges, stormwater discharges, and land application associated with clay mining, processing, and stockpiles.

Standard Conditions

These minimum conditions apply to all permits where incorporated by reference unless superseded by requirements specific in the permit.

Standard Condition Part I

This document of standard conditions incorporate permit conditions as required by 40 CFR 122.41 or applicable state statues or regulations.  These minimum conditions include sampling, monitoring, and recording; reporting requirements; bypass and upset requirements; and administrative requirements.

Standard Condition Part II

This document of standard conditions notes conditions for publicly owned treatment works specific to industrial users, including definitions, identification of industrial discharges, application information and notice to the department.

Standard Condition Part III

This document of standard conditions outline specific requirements for biosolids and sludge from domestic treatment facilities. This part includes general requirements, definitions, mechanical wastewater treatment facilities, biosolids or sludge disposed at other treatment facility or by contract hauler, incineration of sludge, surface disposal sites and biosolids and sludge lagoons, land application of biosolids, septage, closure requirements, monitoring frequency and record-keeping and reporting requirements.

Permit Renewals

Permittees must submit a completed application for the renewal of a permit at least 180 days prior to expiration of a site-specific permit. The following forms must be included (may need more than one): Domestic wastewater systems are those listed as publicly owned treatment works (POTW), or discharge primarily kitchen and/or bathroom wastewater. Industrial facilities are those having industrial wastewater, including cooling water, and/or stormwater discharges for qualifying industries as found in 10 CSR 20-6.200. Domestic wastewater at industrial facilities is included under the industrial operating permit but additional forms may be required, see below

Completed forms should be submitted via e-mail to cleanwaterpermits@dnr.mo.gov. For questions, please contact your previous permit writer, the regional office, email cleanwaterpermits@dnr.mo.gov, or call the Operating Permits Section at (573) 522-4502.

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