Stormwater Management Bylaw
On September 2, 2025, the Planning Board held a public hearing for the proposed Stormwater Management Bylaw. They voted in favor to recommend a draft to the Select Board for consideration on the Special Town Meeting warrant. On November 24, 2025, at Special Town Meeting, voters approved the adoption of the bylaw. The MS4 Subcommittee was dissolved on December 1, 2025, following the bylaw adoption.
The Planning Board is currently holding public hearings to adopt the associated Rules and Regulations. To view the working draft for the associated Rules and Regulations, please email the Planning Office at oprior@marionma.gov, 508-748-3517.
What is a Municipal Separate Storm Sewer System (MS4)?
A separate storm sewer system is a collection of structures, including retention basins, ditches, roadside inlets, and underground pipes, designed to gather stormwater from built-up areas and discharge it, without treatment, into local streams and rivers. It's called a separate system because it's not connected to the sanitary sewer system, which drains wastewater from inside a home to a sewage treatment facility or a private septic system.
For more information on Massachusetts Small MS4 General Permits: https://www.epa.gov/npdes-permits/massachusetts-small-ms4-general-permit
Marion Department of Public Works Stormwater Management webpage: MS4 Stormwater Management | Marion, MA
