WestCOG MS4 Activities

WestCOG is working with municipalities and partner organizations to prepare communities to meet upcoming MS4 requirements through collaborative solutions.

Potential Activities Include are detailed in this memo

Upcoming Webmap:

MS4 Local Jurisdictions, Watershed Map


Involved Organizations

Stormwater Public Information

Upcoming Outreach Materials

MS4 Permit Schedule

Download the draft schedule here

Common Acronyms

Small Municipal Separate Storm Sewer Systems (MS4 General Permit):
The permit requires municipalities to take steps to keep the stormwater entering its storm sewer systems clean before entering streams, lakes, and bays.

Illicit Discharge Detection and Elimination (IDDE):
The process of spotting and fixing pipes or outfalls discharging polluted water.

Directly Connected Impervious Area (DCIA):
Areas where stormwater flows right from a hard surface directly into a stormwater drain. The goal is to disconnect these surfaces.

Permit Source Information (DEEP)

Menu Title