Unlike drinking water and wastewater systems that are largely driven by population growth and economic development, stormwater is dictated by rainfall frequency, duration and intensity. Historically, municipal stormwater management systems were designed and constructed to move rainwater away from streets and buildings as quickly as possible to prevent localized flooding and damage to the built environment.  Only over the past two decades has the water quality component of stormwater runoff influenced action. Unfortunately, while existing stormwater collection systems in urban areas effectively move water rapidly to lakes, rivers and streams, they are ill-suited to improve water quality prior to discharge.  Massachusetts cities and towns are grappling with how to manage stormwater quality using systems designed for a different purpose.


EPA NPDES Final Massachusetts Small MS4 General Permit

EPA NPDES Draft Massachusetts Small MS4 General Permit

EPA NPDES Draft Massachusetts Interstate, Merrimack and South Coastal Small MS4 General Permit

EPA Draft Handbook for Developing Watershed TMDLs

EPA TMDLs Technical Support Documents

Environmental Protection Agency (EPA) Region 1 National Pollutant Discharge Elimination System (NPDES) Storm Water Permit Program

CRWA Upper/Middle Charles TMDL Project Website

CRWA Draft TMDL for Nutrients in the Upper/Middle Charles River

Massachusetts Stormwater Handbook

Down the Drain: Dealing with New Stormwater Permits – A Municipal Perspective,
presented by Robert L. Moylan Jr. at the Massachusetts Municipal Association 2012 Annual Meeting