EPA Proposes Updated General Clean Water Act NPDES And Construction Permits

Key Takeaways

• What Happened? The U.S. Environmental Protection Agency (EPA) proposed the 2026 version of the National Pollutant Discharge Elimination System (NPDES) Multi-Sector General Permit (MSGP) for stormwater discharges associated with industrial activities. When finalized, this new permit will replace the current MSGP when it expires on February 28, 2026. In addition, EPA proposed a narrow modification to its 2022 Construction General Permit for Stormwater Discharges (CGP), to expand the list of areas eligible for coverage. EPA is currently soliciting public comment on all aspects of the proposed MSGP, as well as on the CGP modification.
• Who Is Affected? In the short term, the 2026 MSGP will apply to industrial facilities from thirty different sectors where EPA is the NPDES permitting authority, including Massachusetts, New Hampshire, New Mexico, and the District of Columbia. In the long term, EPA's proposed action will affect industrial facilities in