NOTE: On August 14, 2017, MassDEP issued a determination to revise the schedule for compliance with the 2016 MS4 permit, in light of EPA Region 1's decision to postpone the effective date of the permit. 

MassDEP Determination on Schedule for MS4 General Permits in Massachusetts  pdf format of Schedule for MS4 General Permits in Massachusetts

On April 13, 2016, EPA and MassDEP co-issued the new MS4 permit. The effective date is July 1, 2017. Towns subject to the permit must file for coverage by September 29, 2017.

The permit, maps for each town, permit history, compliance tools, and permit contact information are available here:

The MS4 permit requires each town to implement a public education and outreach program that reaches four different audiences and that includes messages that are most relevant to that community. Towns can click on the links below to download - and save - brochures, pamphlets and other materials and use those to help comply with Section 2.3.2.c of the MS4 permit.

GUIDANCE FOR USING THESE DOCUMENTS: Permission has been granted by the authors to copy and redistribute any of these documents as long as the author’s information is left as is on the document. With a few exceptions, towns can also customize the document to add their name and contact information. With your word processor use the “Save As” command to save the document; then you can make your edits. Depending on the document, edits can range from simply filling in the “Distributed By” box with your town’s contact information to changing anything in the document. Please call DEP’s dedicated MS4 staff at 617-292-5821 if you have any questions.

MassDEP and EPA encourage you to work with other towns, community groups, watershed associations or Stormwater Coalitions as you implement your Public Education program.

Common and Effective Construction BMPs

Stormwater - What You Can Do as a Developer  doc format of Stormwater - What You Can Do as a Developer

Construction Stormwater Tips  pdf format of Construction Stormwater Tips


How Low-Impact Development (LID) Principles and Technologies Reduce Development Cost

Builder's Guide to Low-Impact Development (LID)  doc format of Builder's Guide to Low-Impact Development (LID)


Disturbing an Acre or More: How to Comply with EPA's Construction General Permit

US EPA: Stormwater Pollution Prevention for Small Residential Construction Sites links to PDF file

How to Manage Stormwater at Industrial Sites

Industrial Stormwater Best Management Practices  doc format of Industrial Stormwater BMPs