Facilities in specific industries that store materials, waste, or equipment outdoors are subject to industrial stormwater regulations administered by the MPCA. These facilities must take steps to monitor and manage stormwater on their properties where stormwater may come into contact with harmful pollutants including toxic metals, oil, grease, de-icing salts, and other chemicals.
Industrial stormwater permittees in Minnesota are regulated by a general permit that is reissued every five years.
Informational meetings
The 2020 Industrial Stormwater (ISW) general permit expires on March 31, 2025, and the MPCA’s Industrial Stormwater Program has been developing the 2025 permit.
Review resources from two informational meetings in October that shared proposed changes in the draft 2025 Industrial Stormwater general permit.
Annual report
Submit annual reports to the MPCA via e-Services. Learn more: Step 6: Meet requirements
Impaired waters search
Facilities with industrial stormwater permits can use this tool to identify special and impaired waters near their monitoring locations as required by the general permit.
