EPA temporarily extends 2021 MSGP coverage
The Environmental Protection Agency (EPA) has issued an administrative continuance of the 2021 Multi-Sector General Permit (MSGP) and a No Action Assurance memorandum for industrial stormwater discharges regulated under the National Pollutant Discharge Elimination System.
The 2021 MSGP expired on February 28, 2026. However, because EPA hasn’t reissued a new permit to replace the expired permit, the 2021 MSGP remains in effect for facilities previously covered. Additionally, the No Action Assurance allows facilities without previous coverage to discharge industrial stormwater in compliance with the 2021 MSGP.
Who’s affected?
Facilities are required to obtain MSGPs for stormwater discharges from industrial activities in areas where EPA is the permitting authority, including:
- Existing facilities (those that had active coverage under the 2021 MSGP), and
- New facilities (those that didn’t obtain coverage under the 2021 MSGP before it expired).
What do existing facilities do?
The administrative continuance automatically applies to existing facilities that were actively covered by the 2021 MSGP before it expired. The facility’s coverage status should show “Admin. Continued” in the NPDES eReporting Tool (NeT-MSGP).
Facilities will remain covered by the 2021 MSGP until EPA issues a new MSGP and the facilities obtain coverage under the new MSGP. Until then, existing facilities should continue to comply with the 2021 MSGP requirements.
EPA will provide further guidance on renewing coverage when it issues the new MSGP.
What do new facilities do?
New facilities can’t obtain coverage under the MSGP until EPA issues a new permit. However, EPA issued a memorandum on February 27, 2026, establishing a No Action Assurance. The agency won’t take enforcement action against new facilities for unpermitted stormwater discharges if the facilities meet specific conditions.
The No Action Assurance extends from March 1, 2026, to the new MSGP’s effective date.
Applicability
EPA’s No Action Assurance applies to facilities that:
- Discharge stormwater on or after March 1, 2026 (but before the new MSGP’s effective date); and
- Didn’t submit a Notice of Intent (NOI) for coverage under the 2021 MSGP before its expiration on February 28, 2026.
The assurance doesn’t apply to existing facilities that started stormwater discharges before February 28, 2026, without obtaining 2021 MSGP coverage.
Conditions
To be covered by the No Action Assurance, new facilities have to:
- Meet the 2021 MSGP eligibility criteria,
- Submit an NOI form (Appendix G of the MSGP) via msgp@epa.gov to notify EPA of their intention to operate according to all applicable 2021 MSGP requirements before discharging industrial stormwater, and
- Comply with all applicable 2021 MSGP regulations, such as:
- Developing and implementing a Stormwater Pollution Prevention Plan,
- Installing and maintaining stormwater controls, and
- Conducting site inspections and monitoring.
What’s next?
Once EPA issues the new MSGP, facilities planning to continue industrial stormwater discharges must submit a new NOI through Net-MSGP within 90 days of the new MSGP’s effective date to obtain coverage under the new MSGP.
EPA provides guidance for existing and new facilities on its “Administrative Continuance of EPA’s 2021 MSGP” webpage.
Key to remember: EPA has temporarily extended coverage under the 2021 MSGP for industrial stormwater discharges until the agency issues a new general permit.



















































