Stormwater Management
Municipal Separate Storm Sewer System (MS4)
Stormwater Management Plan
This plan is required by the General Permit for the Discharge of Stormwater from Small Municipal Separate Storm Sewer Systems issued by the Connecticut Department of Energy and Environmental Protection (DEEP) January 20, 2016 (commonly known as the "MS4 Permit"). Public comments are welcome. Contact the Selectman's Office, Thompson Town Hall, 815 Riverside Drive, P.O. Box 899 North Grosvenordale, CT 06255 (860-923-9561) or via email complete a Citizen Comment Form, click here.
Stormwater Management Plan Annual Report 2023
This report documents Thompson's activities and progress in 2020 to manage it's stormwater system and improve, where possible, the water quality of the discharges from its stormwater system. Thompson's Stormwater Management Plan (see above) provides the framework and sets goals for these activities. Both the stormwater Management Plan and this Annual Report are required by the MS4 Permit. As with the Stormwater Management Plans public comment is welcome and can be sent to the Selectman's Office, Thompson Town Hall, 815 Riverside Drive, P.O. Box 899 North Grosvenordale, CT 06255 (860-923-9561) and via email complete a Citizen Comment Form, click here
MS4 Public Education Resources
- After the Storm - A Citizen's Guide to Understanding Stormwater
- Illicit Discharges and Water Pollution
- Nonpoint Source Water Pollution
- Protecting Water Quality From Urban Runoff
- Rain Garden Brochure For Homeowners
- Storm Sewer System Brochure
- DEEP- Household Products Containing Mercury
- DEEP - Mercury Information
- Mercury Health Effects 2009
- USGS - Mercury in the Environment