Discharges Associated with Construction Dewatering

The purpose of the Construction Dewatering General Permit is to regulate discharge wastewater effluent from dewatering of groundwater and/or surface water from construction sites, well pump tests and/or well development to state waters in accordance with effluent limitations, monitoring requirements and other conditions set forth in the General Permit. The Construction Dewatering 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.

2015 General Permit Effective September 1, 2015

Application Package for 2015 General Permit

 Upon completion of discharge, fill out and submit a Notice of Termination form.


Go To Facts

Click the logo to go to FACTS, the Water Protection Bureau’s online system to apply for and manage wastewater and stormwater discharge permits. All permits, individual surface and groundwater as well as general permits, are included in the system.