Discharges Associated with Domestic Sewage Treatment Lagoons
The purpose of the Domestic Sewage Treatment Lagoons General Permit is to discharge treated wastewater from sewage treatment lagoons, as determined by the Department, to State waters in accordance with effluent limitations, monitoring requirements and other conditions set forth in the General Permit.

The Domestic Sewage Treatment Lagoons General Permit is in compliance with the Montana Water Quality Act, Title 75, Chapter 5, Montana Code Annotated (MCA), and the Federal Water Pollution Control Act (the “Clean Water Act”), 33 U.S.C. 1251 et. seq., A written authorization letter from the Department is required before and applicant is authorized to discharge under the General Permit.
- General Permit for Discharges Associated with Domestic Sewage Lagoons
- Permit Fee Schedule for Applications and Annual Fees
- Application Package for Domestic Sewage Treatment Lagoons General Permit.
- Rules and Regulations
