Municipal separate storm sewer system, or MS4, is a publicly-owned conveyance system that's designed to collect or convey stormwater runoff through storm drains, curbs, ditches, and pipes. These systems eventually discharge the collected stormwater into nearby streams, lakes, or other surface waters. The stormwater collected by the MS4 is often contaminated with pollutants, trash, and debris.

Operators of regulated MS4s are required to develop and implement a stormwater management plan. This plan includes ways the operator or community will reduce the discharge of pollutants from its sewer system. Stormwater control measures, or SCMs, are implemented throughout the MS4 to prevent stormwater from coming in contact with pollutants, or to remove pollutants from stormwater prior to discharge from an area.

The Summit SWCD assists communities with a variety of public education, outreach, involvement and participation programs to help meet the requirements of the local MS4 management plan. These programs include both print and electronic newsletters, social media platforms, community displays, and workshops.

2018 Stormwater Theme: On the Road to Clean Water!

In 2018, the educational and outreach program will especially target use and maintenance of combustion-engine powered vehicles and devices, roadway maintenance, and the effects of all these on watersheds health. The four quarterly themes for the 2018 program will be:

Winter - Salting practices
Spring - Car Maintenance and Litter
Summer - Car Wash and Boats
Autumn - Lawn Equipment Maintenance