The purpose of the Disinfected Water General Permit is to discharge wastewater resulting from hydrostatic testing or disinfecting with water containing chlorine or other approved oxidants used for disinfection. Discharges are authorized to state waters after treatment. Discharges shall be in accordance with effluent limitations, monitoring requirements, and other conditions set forth in the General Permit.
The Disinfected Water 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 an applicant is authorized to discharge under the General Permit.