Industrial stormwater guidance

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.

MPCA e-Services

Application guidance

Permit 

• 2025 Multi-Sector General Permit for Industrial Stormwater (wq-strm3-102g)

  Effective June 1, 2025
• Updates and new requirements for the 2025 Multi-Sector General Permit for Industrial Stormwater (wq-strm3-102f)

Permit applicability

• Is my facility required to obtain the Industrial Stormwater general permit? (wq-strm3-02b)

Stormwater pollution prevention plans (SWPPP)

• Template: Industrial stormwater pollution prevention plan (wq-strm3-28)
• Industrial stormwater pollution prevention plan checklist (wq-strm3-57)
• Mercury minimization plan checklist (wq-strm3-30)
• Industrial stormwater monthly site inspection form (wq-strm3-56)

Best management practices (BMP)

• Industrial stormwater best management practices guidebook (wq-strm3-26)
• Video: Best management practice options for total suspended solids (6 min.)

No Exposure

• Qualifying for, and keeping, the No Exposure exclusion (wq-strm3-13)

Sampling

• Industrial stormwater monitoring guidance manual (wq-strm3-27)
• Webex: Industrial stormwater reporting signatory training (46 min.)
• Webex: Industrial stormwater sampling/monitoring reporting in e-Services (65 min.)
• Industrial stormwater reporting guidance (wq-strm3-98)
• Industrial stormwater waiver request (wq-strm3-68)
• Industrial stormwater sheet flow sampling guidance (wq-strm3-33a)
• Video: How to collect a sheet flow sample (6 min.)
• Industrial stormwater: How to collect a grab sample (wq-strm3-33b)
• Video: How to collect a grab sample (4 min.)
• 2020-2025 Industrial stormwater sampling worksheet (wq-strm3-69)
• Benchmark and effluent monitoring location diagrams for all sectors (wq-strm3-29)

e-Services 

• Getting started with MPCA e-Services (p-gen1-17)
• Guidance: Notification of permit termination e-Service (p-gen1-18)
• Guidance: Industrial Stormwater application e-Service (wq-strm3-105a)
• Industrial stormwater electronic signature submittal agreement (wq-strm3-97)
• Guidance: Industrial stormwater annual report e-Service (p-gen1-24)
• Industrial Stormwater e-Services request to remove account holder authorization (wq-wwprm7-100d)
• Webex: Industrial stormwater - monitoring service in e-Services (65 min.)

Additional stormwater-related guidance

• Smart Salting training: MPCA works with private and municipal salt applicators to help them use less salt and save money. Learn about training opportunities, parking lot/sidewalk maintenance recommendations and more.
• Concrete, paint, stucco and other washout guidance (wq-strm2-24)
• Wastewater permits: Permitting for wastewater/wash water that is discharged into surface and groundwater.
• Nonmetallic mining: Permitting for facilities that mine construction sand and gravel; quarry limestone, granite or dimension stone; operate hot mix asphalt production areas and/or have concrete manufacturing/recycling activities.
• Dust control treatments for roads and surfaces (aq1-15)
• Hazardous waste management: In Minnesota, commercial entities that produce any amount of hazardous waste are regulated as hazardous-waste "generators" with requirements that depend upon the amount of waste they produce.
• Powerwashing and other water-based blasting (w-hw4-39b)
• Storage tanks: Regulations for commercial storage tanks in Minnesota.
• Feed storage areas for animal feedlots (wq-f8-20)
• Minnesota Technical Assistance Program (MnTAP): An outreach program that helps Minnesota businesses to prevent pollution, maximize efficient use of resources, and reduce energy use.