Stormwater

Stormwater is water from rain or melting snow that doesn't soak into the ground but instead flows over pavement, roofs, and yards into storm drains or directly into water bodies. 

Anything that flows down a storm drain comes out in a nearby waterway. As stormwater flows over land, down streets, and into storm drains, it picks up pollutants such as litter, grass clippings, leaves, lawn fertilizers, oil leaks from cars, winter sand and road salt, and pet waste. These pollutants can flow directly into our waterways.

EPA inforgraphic


Learn how to protect our local waterways.

Business Waste
Fall Cleanup
Pet Waste
Septic Systems
Swimming Pools
Yard Fertilizer




Building Resilient Infrastructure and Communities (BRIC) Grant
Stream Crossings and Culvert Assessment

The Town of Hopkinton is working with a team of consultants to assess areas of concern in the Town’s stormwater collection and distribution system. As part of the FEMA Building Resilient Infrastructure and Communities (BRIC) grant, the Town is tasked with identifying different areas of localized flooding in order to enhance the Town’s existing stormwater collection infrastructure and reduce flooding-related impacts to the community. The primary focus of this work will be on stream crossings and culverts.   

The Town applied for this grant following the completion of the 2020 Hazard Mitigation- Municipal Vulnerability Preparedness Plan (HMP-MVP Plan). The HMP-MVP Plan identified that stormwater flooding as a hazard affecting the Town. The full HMP-MVP Plan is linked below.  

 2020 Hazard Mitigation - Municipal Vulnerability Preparedness Plan (MVP Plan)

Stormwater Links