Stormwater

Find information on what MassDEP is doing to reduce pollution from stormwater.

MassDEP helps people learn about federal, state, and local stormwater permits. Many of these permits are administered directly by the federal EPA or by cities and towns. Here is information about these programs.

Federal Stormwater Permits

These permits are:

  • The Construction General Permit: for construction projects disturbing one or more acres.
  • The Multi-Sector General Permit: to operate industrial facilities in Massachusetts.
  • The Municipal Separate Storm Sewer System (MS4) General Permit: for most cities and towns in Massachusetts, to operate municipal stormwater systems. 

MassDEP has compiled materials to assist affected municipalities in complying with the MS4 permit; see the fourth link and the documents below.

Additional Resources

State Stormwater Standards and Permits

Massachusetts administers stormwater standards through provisions of the Wetlands Protection regulations, 310 CMR 10.00.

Depending on their type and jurisdiction, projects that have a stormwater-management component may fall under:

  • Wetlands Notices of Intent (WPA Form 3): filed with the local Conservation Commission for projects in wetland areas
  • Surface Water Discharge General Permit (WM 15): for Construction General Permits or Multi-Sector General Permits in Outstanding Resource Waters.

Additional Resources

Local Stormwater Permitting

Cities and towns may have local stormwater and/or wetlands bylaws; contact your city or town for guidance. 

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