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NPDES Stormwater Permit Program in New England

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The Clean Water Act authorizes EPA and states, which are delegated the authority by EPA, to regulate point sources that discharge pollutants into waters of the United States through the National Pollutant Discharge Elimination System (NPDES) permit program. So-called "point sources" are generated from a variety of municipal and industrial operations, including treated wastewater, process water, cooling water, and stormwater runoff from drainage systems. The NPDES Stormwater Program (national EPA NPDES site), in place since 1990, regulates discharges from municipal separate storm sewer systems (MS4s), construction activities, industrial activities, and those designated by EPA due to water quality impacts.

On this page:


EPA Contacts

MS4 Program
Newton Tedder (, 617-918-1038

Construction General Permit (CGP) Program
Dave Gray (, 617-918-1577

Industrial/Multi-Sector General Permit (MSGP) Program
Dave Gray (, 617-918-1577

Residual Designation Authority (RDA) Permitting
Mark Voorhees (, 617-918-1537

State Contacts

CTDEEP Water Regulating and Discharges
Chris Stone (, 860-424-3850

Maine DEP Stormwater Program
Brian Kavanah (, 207-287-7700

MassDEP Stormwater Program
Laura Schifman (, 617-556-1157

New Hampshire
NHDES Stormwater Program
Hayley Franz (, 603-271-0671

Rhode Island
RIDEM Stormwater Program
Margarita Chatterton (, 401-222-4700 x 7605

Vermont DEC Stormwater Program
Padraic Monks (, 802-490-6169

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EPA Region 1 Issued Large & Medium MS4 Permits

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EPA Region 1 Small MS4 Program for Massachusetts and New Hampshire

EPA is proposing to modify the 2016 Massachusetts MS4 Permit and the 2017 New Hampshire MS4 Permit. For more information please see the permit specific web pages below.

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Construction Activities

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Industrial Activities

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Residual Designations

The Clean Water Act (CWA) and related regulations define the specific industrial and municipal stormwater sources that must be authorized by an NPDES permit. The CWA recognizes that other sources, such as commercial properties, may need to be regulated on a case-by-case or category-by-category basis based on additional information or localized conditions. The authority to regulate other sources based on the localized adverse impact of stormwater on water quality through NPDES permits is commonly referred to as the "Residual Designation" authority.

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Tools and Resources

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