Montana Pesticide General Permit

The Montana Pesticide General Permit (PGP) is the wastewater discharge permitting mechanism for anyone who applies pesticides into or over state surface water.  The PGP is not a pesticide permit; it is a wastewater discharge permit regulated under the Montana Department of Environmental Quality (DEQ) Montana Pollution Discharge Elimination System (MPDES) program.  Discharge of pollutants to state water without a permit is a violation of the Montana Water Quality Act in 75-5-605, Montana Code Annotated (MCA).

On September 15, 2016, the Montana Department of Environmental Quality (DEQ) issued the final Pesticide General Permit (PGP).

2016 Pesticide General Permit

Application Package for 2016 Pesticide General Permit

PGP coverage is based on two unique criteria; single-county vs. multi-county and the area of water to which pesticides will be applied.

A Notice of Intent (NOI) submittal is required before pesticide is applied to or over surface water.  The NOI is a legal notification by the owner/operator to DEQ that they will comply with all terms and conditions of the PGP.  If the application of pesticides occurs within the boundaries of Indian Lands, the owner/operator will need to comply with the requirements of the EPA’s Pesticide General Permit.

The application package for PGP authorization consists of a Notice of Intent form and fee:

Other PGP Information

Documents related to the 2016 PGP issuance



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.