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.
The 2025-2030 Industrial stormwater multi-sector general permit (MSGP) is effective June 1, 2025.
Global: Application services for ISW live
Application e-Service live
Apply online for the 2025 Multi-sector General Permit (MSGP) for Industrial Stormwater and No Exposure certifications. All industrial facilities who have been operating under the 2020 issuance of the MSGP or No Exposure certifications must log in to e-Services and complete an application to continue coverage.
Annual report
Submit annual reports to the MPCA via e-Services. Learn more: Step 6: Meet requirements
Global: Industrial stormwater permit search
Permit search
Industrial stormwater permit information includes permit numbers, facility contacts and locations, and copies of Notices of Coverage.
Global: ISW special and impaired waters search
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.
GovDelivery: Industrial stormwater MNPCA_37
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