Massachusetts NPDES Permits

This page contains information on EPA New England issued individual facility-specific permits and general permits that cover multiple facilities within a specific category and geographic area.

Authorization: In Massachusetts NPDES permits are issued by EPA New England.

Specific individual permits may include additional attachments and supporting documentation that are not available electronically. As required by law, EPA maintains an administrative record for each permit it issues at our regional office. To view the administrative record (the legally binding hard copy of the permit) or to obtain hard copies of additional attachments for a specific permit please contact:

Richard Carvalho (carvalho.richard@epa.gov)
617-918-1546

• Permits of Significant Interest
• Draft General Permits
• Final General Permits

• Draft Individual Permits
• Final Individual Permits
• EPA NPDES Permit Forms & Attachments for New England
• NPDES Water Permit Program in New England
• NPDES Stormwater Permit Program in New England
• View NPDES Permits for All States

Permits of Significant Interest

• Brayton Point Station Final NPDES Permit
• Chelsea River Bulk Petroleum Storage Facilities NPDES Permits and Environmental Justice Analysis
• General Electric, Pittsfield, Mass., Final NPDES Permit (pdf) (1 MB)
• Massport Logan International Airport NPDES Permit
• Mirant Canal Station Final NPDES Permit
• GenOn (formerly Mirant) Kendall Station Final NPDES Permit
• Massachusetts Water Resources Authority (MWRA) Permit
  • Massachusetts Water Resources Authority (MWRA) Outfall Monitoring
• Offshore Deepwater Liquified Natural Gas (LNG) Ports
• Pilgrim Nuclear Power Station Final NPDES Permit
• Worcester Municipal Separate Storm Sewer System (MS4)

Draft General Permits

• 2023 Draft Potable Water Treatment Facility General Permit (PWTF GP)
  Public comment period closes: April 21, 2023.
• Region 1 Draft Aquaculture General Permit (AQUAGP)
  Public comment period closed.
• Draft 2018 Hydroelectric Generating Facilities General Permit (HYDROGP)
  Public comment period closed.
• Draft 2016 Pesticide General Permit (PGP) for Discharges from the Application of Pesticides
  Public comment period closed.
• Draft General Permit for Residually Designated Discharges in Milford, Bellingham, and Franklin, Massachusetts
  Public comment period closed.
• Draft Massachusetts North Coastal Small MS4 General Permit
  Public comment period closed.

Final General Permits

• 2023 Final Hydroelectric Generating Facilities General Permit for Facilities in Massachusetts and New Hampshire (HYDROGP)
  The final Hydroelectric Generating Facilities General Permit was signed on February 14, 2023 and the effective date is April 15, 2023.
• 2022 Medium Wastewater Treatment Facilities General Permit (Medium WWTF GP)
  The final Medium WWTF GP was issued on September 28, 2022 and the effective date is November 1, 2022.
• Final 2022 Dewatering and Remediation General Permit (DRGP)
  The final DRGP was signed August 2, 2022 and is fully effective as of August 31, 2022.
• 2021 Small Wastewater Treatment Facilities General Permit (Small WWTF GP)
• 2021 Region 1 Final Aquaculture General Permit (AQUAGP)
• Construction General Permit (CGP): 2022 | 2017 | 2012 | 2008
• Multi-Sector General Permit (MSGP): 2021 | 2015 | 2008
• 2017 Remediation General Permit (RGP)
• 2017 & 2009 Potable Water Treatment Facility General Permit (PWTF GP)
• 2016 Massachusetts Small MS4 General Permit
• 2015 Dewatering General Permit for Massachusetts and New Hampshire
• 2014 Noncontact Cooling Water General Permit (NCCWGP)
• 2014 Small Vessel General Permit (sVGP)
• 2013 Vessel General Permit (VGP)
• 2011 Publicly Owned Treatment Works General Permit (POTW GP)
• 2009 Hydroelectric Generating Facilities General Permit (HYDROGP)
• 2003 Storm Water Discharges from Small Municipal Separate Storm Sewer Systems (MS4s) (pdf) (264 K)