Calendar of Events

Overview

  • US EPA - General NPDES Information

    The National Pollutant Discharge Elimination System (NPDES) permit program controls water pollution by regulating point sources (pipes, ditches, drains, etc.) that discharge pollutants into waters of the United States. Massachusetts is not currently delegated by EPA to issue NPDES permits, but is initiating the process to develop a stormwater management program in accordance with NPDES and the Clean Water Act.

  • Clean Water Act

    The Federal Clean Water Act is the legal framework for the NPDES Permit Program, providing the statutory basis for the program and the basic structure for regulating the discharge of pollutants from point sources to waters of the United States. The Act requires anyone who wants to discharge pollutants to first obtain an NPDES permit. This US EPA page summarizes the Clean Water Act and links to further information about it, including the full text of the Act.

Massachusetts Regulations

  • Summary of 2008 Stormwater Revisions  pdf format of Summary of 2008 Stormwater Revisions
doc format of                             Summary of 2008 Stormwater Revisions

    Summary of revisions to the Wetlands Protection Act Regulations (310 CMR 10.00) and the Water Quality Certification Regulations (314 CMR 9.00), promulgated in January 2008, updating provisions and applicability of the Massachusetts Stormwater Management Standards.

  • MassDEP to Review Recent Studies on Precipitation Rates in Massachusetts  pdf format of MassDEP to Review Precipitation-Rate Studies
doc format of                             MassDEP to Review Precipitation-Rate Studies

    As part of the Commonwealth's climate-change resiliency effort, MassDEP is evaluating the most recent precipitation-frequency statistics from the National Oceanic and Atmospheric Administration, with the goal of updating the Wetlands regulations (310 CMR 10.00) to accommodate the use of newer data in the wetlands permitting process. These statistics apply to stormwater peak runoff rates, calculation of 10-year floodplains, and isolated lands subject to flooding. In the interim, existing values from the US Weather Bureau Technical Paper 40 (TP40) should continue to be used. November 2015.

Surface Water Discharge (NPDES) General Permits

  • General Permits - MassDEP Applications

    For the most part, general permits are administered by EPA, require submission of a Notice of Intent (NOI) to EPA, and do not require an application to MassDEP. However, there are some circumstances that require submittal to both MassDEP and EPA. The following situations require applicants to submit a MassDEP transmittal form, a copy of the EPA’s NOI, payment (unless exempt), and any other required submittals to MassDEP:

    • Construction General Permit (CGP) with discharge to an Outstanding Resource Water (ORW);
    • Massachusetts Small Municipal Separate Storm Sewer Systems (MS4) Permit;
    • Publicly Owned Treatment Works General Permit (POTW GP);
    • Potable Water Treatment Facilities General Permit (PWTF GP) for first time applicants that also discharge to an ORW and High Quality Waters; 
    • Remediation General Permit (RGP) with discharge to an ORW waters;
    • Dewatering General Permit (DGP) with discharge to Class A or Class SA Waters.

    Instructions for these submittals are available here: Surface Water Discharge (NPDES) Individual Permit Application . Questions should be directed to the MassDEP staff listed below.

    POTW GP: Claire Golden, 978-694-3244.
    PWTF GP: Xiaodan Ruan, 617-654-6517.
    Remediation GP: Cathy Vakalopoulos, 617-348-4026.
    Stormwater GP: Fred Civian, 617-292-5821.
    All other GPs: Jennifer Wood, 617-654-6536.

  • NPDES Permit FAQs

    Questions & answers on state and federal responsibilities for NPDES permitting in Massachusetts.

  • WM 15 - NPDES General Permit Notice of Intent (replaces former permit codes WM 08, 09, 10, 11, 12, 13 & 14)

    The process for submitting a Notice of Intent (NOI) for NPDES General Permits, which are issued by the US Environmental Protection Agency. BWR WM 15 replaces former permit codes WM 08, 09, 10, 11, 12, 13 & 14.  Revised March 2017.

  • US EPA Construction General Permit

    Coverage under the CGP is required for stormwater discharges from construction sites disturbing one or more acres of land or smaller sites that are part of a common plan of development or sale. The 2017 Construction General Permit took effect on February 16, 2017.

  • The Federal Multi Sector General Permit (MSGP)

    The MSGP provides coverage for the following types of discharges: stormwater discharges associated with industrial activity for any primary industrial activities and co-located industrial activities; discharges designated by EPA as needing a stormwater permit; discharges that are not otherwise required to obtain NPDES permit authorization but are mixed with discharges subject to the MSGP; and stormwater discharges from facilities subject to any of the national stormwater-specific effluent limitations guidelines. The current version of the MSGP was issued on June 4, 2015.

  • US EPA: Massachusetts Small Municipal Separate Storm Sewer Systems (MS4) Permit

    The MS4 permit authorizes the discharge of stormwater from small municipal separate storm sewer systems that are located entirely or partially within an urbanized area as determined by the latest census, and are not designated as a medium or large MS4. The 2016 Permit was signed April 4, 2016, and will become effective July 1, 2017.

  • US EPA Dewatering General Permit (DGP)

    This general permit provides coverage for facilities with construction dewatering of groundwater intrusion and/or storm water accumulation from sites less than one acre, and short-term and long-term dewatering of foundation sumps into waters of Massachusetts and New Hampshire. The permit establishes permit eligibility conditions, notice of intent requirements, effluent limitations, standards, prohibitions, and best management practices. The most recent version of this permit took effect May 20, 2015.

  • US EPA Hydroelectric Generating Facilities General Permit (HYDROGP)

    Coverage under the HYDROGP is available to hydroelectric generating facilities in Massachusetts that discharge equipment cooling water, equipment and floor drain water, equipment backwash water, certain maintenance related waters, and combinations of the preceding discharges. The most recent version of this permit took effect December 7, 2009.

  • US EPA: Noncontact Cooling Water General Permit (NCCWGP)

    The NCCW general permit is for discharges of non-contact cooling water to waters of Massachusetts and New Hampshire. The permit establishes permit eligibility conditions, notice of intent requirements, effluent limitations, standards, prohibitions, and best management practices for facilities discharging NCCW. The most recent version of the permit took effect on November 3, 2014.

  • US EPA Pesticide General Permit

    This permit is available to operators who discharge to waters of the United States from the application of (1) biological pesticides or (2) chemical pesticides that leave a residue when the pesticide application is for one of the following pesticide use patterns: Mosquito and Other Flying Insect Pest Control; Weed and Algae Pest Control; Animal Pest Control; or Forest Canopy Pest Control. The most recent version of the permit took effect October 31, 2016.

  • US EPA: Potable Water Treatment Facilities General Permit (PWTF GP)

    Under the PWTF GP, owners and operators of PWTFs which discharge wastewater from one or more eligible treatment processes can be covered by this permit. The treatment processes covered include: clarification, coagulation, media filtration, membrane filtration (not including reverse osmosis), and disinfection. The most recent version of this permit took effect on March 6, 2017.

  • US EPA Publicly Owned Treatment Works General Permit (POTW GP)

    This permit authorizes discharges of wastewater from certain POTWs and other treatment works treating domestic sewage. Only facilities classified as minor are eligible for coverage under this permit. More specific eligibility requirements are provided in the permit. Facilities interested in seeking coverage under the POTW GP should follow the instructions for submitting an NOI found in the permit on EPA’s website. Facilities must also submit an individual application to MassDEP, as described here. The most recent version of this permit took effect July 6, 2011.

  • US EPA Remediation General Permit (RGP)

    The RGP authorizes discharge of water from four general categories: site remediation primarily related to petroleum contamination; site remediation activities where petroleum is not the primary contaminant; contaminated construction site dewatering; and miscellaneous contaminated discharges. The most recent version of the permit takes effect on April 8, 2017.

  • US EPA Vessel and Small Vessel General Permits (VGP and sVGP)

    The VGP provides for NPDES permit coverage for incidental discharges into waters of the United States from commercial vessels greater than 79 feet in length and for ballast water from commercial vessels of all sizes. The sVGP provides coverage for vessels less than 79 feet in length. Vessels in the small category are not required to obtain coverage until December 18, 2017, except for any ballast water discharges. Commercial fishing vessels are exempt from having to obtain NPDES permit coverage for incidental discharges until December 18, 2017, except for ballast water.

Cross-Permit Guidance

  • Stormwater Programs

    Both MassDEP and US EPA regulate stormwater in Massachusetts. In addition, municipalities may have local drainage, sewer, wetland, or other ordinances that regulate stormwater.

  • How an NPDES Stormwater General Permit Works

    A stormwater general permit is both a permit and a handbook for compliance. Each general permit has a preamble (or fact sheet) that summarizes the factual, legal, methodological, and policy questions considered in drafting the permit. The information in the fact sheet often helps the reader better understand the intent of the provisions in the permit.

  • NPDES Stormwater Notices of Intent

    Online viewer for 2008 Construction General Permit and Multi-Sector General Permit Notices of Intent.

  • NEIWPCC (New England Interstate Water Pollution Control Commission)

    NEIWPCC is an interstate agency charged with fostering strategic cooperation for water management and water-resource protection among the six New England states and New York, providing training and certification for environmental professionals as well as educating the public on environmental protection issues.

Construction General Permit

Municipal Separate Storm Sewers

Multi-Sector General Permit

  • The Federal Multi Sector General Permit (MSGP)

    The MSGP provides coverage for the following types of discharges: stormwater discharges associated with industrial activity for any primary industrial activities and co-located industrial activities; discharges designated by EPA as needing a stormwater permit; discharges that are not otherwise required to obtain NPDES permit authorization but are mixed with discharges subject to the MSGP; and stormwater discharges from facilities subject to any of the national stormwater-specific effluent limitations guidelines. The current version of the MSGP was issued on June 4, 2015.

  • US EPA: 2008 MSGP Fact Sheet: section by section explanation links to PDF file

    Detailed explanation of the 2008 General Permit.

  • How to file the MSGP Electronic Notice of Intent

    Using EPA's online Notice of Intent system for NPDES General Permits.

  • NPDES Stormwater Notices of Intent

    Online viewer for 2008 Construction General Permit and Multi-Sector General Permit Notices of Intent.

Stormwater Permitting as it Pertains to the Wetlands Protection Act

  • Green Roofs & Stormwater Management

    Green roofs are just one component that may be used to achieve Leadership in Energy and  Environmental Design (LEED) certification for new and existing buildings, as they reduce stormwater runoff and promote energy savings.

  • Massachusetts Stormwater Handbook

    Revised and updated in February 2008 in accordance with revisions to the Wetlands regulations, 310 CMR 10.00, and the Water Quality Regulations, 314 CMR 9.00, relating to stormwater.

Local Permitting Assistance

Presentations from Stormwater Workshops

Resources