Regulated MS4 in Massachusetts Communities

Map of Regulated MS4 Areas in Massachusetts
Massachusetts Phase II Automatically Designated Area (pdf) (2.1 MB)

All MS4s operated within the regulated area are subject to the Phase II MS4 Program

Visit MassDEP's website to search surface water quality maps related to 305(b)/303(d) waters in Massachusetts.

*EPA is taking comments on the Notice of Intent (NOI) documents posted on this website for 30 days from the date of posting, as indicated below (unless otherwise noted). Submit comments to EPA at the following email address: stormwater.reports@epa.gov or at the address below and indicate the NOI you are commenting on.*

Stormwater and Construction Permits Section
Attention Newton Tedder
U.S. Environmental Protection Agency, Region 1
5 Post Office Square, Suite 100
Mail Code OEP06-4

Non-Traditional MS4s

These PDF reports do not include any attachments that were submitted as part of the annual report. Reach out to Michelle Vuto (vuto.michelle@epa.gov) for access to the annual report attachments.

Traditional MS4s

Community-Specific Information

* Information in grey-scale not yet available

Non-Traditional MS4s

  • MA Hospital School - Canton
    • NOI
    • Reports:
  • Massasoit - State College
    • NOI
    • Reports:
  • University of Massachusetts Dartmouth
    • NOI (Posted 1/28/20)
    • Reports:
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Last updated on June 6, 2025