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Water Quality Division > Programs > Stormwater > MS4

Current Status of MS4 Program

ODEQ has been delegated Stormwater Phase II MS4 Permitting. There are currently two Phase I MS4 cities, Oklahoma City and Tulsa, and 48 Phase II Small MS4 cities.

Fore more details about MS4 Permitting, including definitions and frequently asked questions, go to EPA's MS4 website (exit DEQ site).

Oklahoma City MS4 Permit

The Oklahoma City MS4 Draft Permit became effective on March 15, 2013. The permit and fact sheet are available below.

Tulsa MS4 Permit

The Tulsa MS4 Permit became effective on October 16, 2011. The permit, fact sheet, and response to comments are available below.

Small MS4 Permit

The MS4 permit for small communities will become effective on November 1, 2015. The permit, fact sheet, and response to comments are available below.

For questions about the MS4 program, please contact Karen Milford.



Urbanized Area (UA) Information