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Stormwater Discharges from Industrial Activities-EPA's Proposed 2026 MSGP
Stormwater Discharges from Industrial Activities Topics * Overview * EPA's Proposed 2026 MSGP * EPA's 2021 MSGP * Administrative Continuance * Previous Versions of EPA's MSGP * Threatened and Endangered Species * Electronic Reporting (CDX, NeT-MSGP, NetDMR) * Fact Sheets and Guidance * Conditional "No Exposure" Exclusion * Stormwater Controls – Additional Resources
On this page: * Proposed 2026 Multi-Sector General Permit for Public Comment * Proposed 2026 MSGP Documents
Proposed 2026 Multi-Sector General Permit
The public comment period on a proposed 2026 National Pollutant Discharge Elimination System (NPDES) Multi-Sector General Permit (MSGP) for stormwater discharges from industrial activity closed on May 19, 2025. This proposed permit would replace the 2021 MSGP upon finalization. This proposed permit would cover stormwater discharges from industrial facilities in areas where EPA is the NPDES permitting authority. The proposed fact sheet, permit, and other associated documents can be found below and are available in the docket (docket ID EPA-HQ-OW-2024-0481). * Federal Register Notice (pdf)Exit EPA’s website (219.98 KB)
In January 2025, EPA held a webinar to provide an overview of new proposed permit requirements. * (1.01 MB)
Proposed 2026 MSGP Documents
Proposed 2026 MSGP – Permit
2026 MSGP – Appendices
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National Pollutant Discharge Elimination System (NPDES)
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