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Members

Coverage

NMSA is an alliance of state and regional groups made up of MS4 permittees across the U.S. with the vision of solving stormwater challenges to provide clean water for the nation.

* Coverage in U.S. EPA Regions 1, 3, 4, 5, 6, 7, 8, and 9.

NMSA Represents 26 States

Covering 9 OF 10 EPA Regions

Current MS4, Affiliate, STEPP and Emeritus Members

Affiliate Members

Emeritus Members

David Smith

Paul Davis

Thomas Sprehe

Mike Trojan

MS4 Members

Washington, D.C.

Thurston County, WA

Baton Rouge, LA

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