The Massachusetts Surface Water Quality Standards implement the provisions of the federal Clean Water Act, which protects the environmental integrity of the nation's waters. The Surface Water Quality Standards designate the most sensitive uses of Massachusetts waters and provide criteria for evaluating water quality to support those uses.

314 CMR 4.00: Surface Water Quality Standards  pdf format of 314 CMR 4.00: Surface Water Quality Standards
file size 8MB

314 CMR 4.00, the Massachusetts Surface Water Quality Standards, implements the requirements of the federal Clean Water Act, regulating discharges of pollutants into surface waters. These regulations were last amended in December 2013.

314 CMR 4.06 - High-Resolution Tables & Figures  pdf format of 314 CMR 4.06 - High-Resolution Tables & Figures
file size 8MB

314 CMR 4.06 lists Massachusetts waterbodies classified in accordance with the provisions of the Massachusetts Surface Water Quality Standards, corresponding to the US Environmental Protection Agency's Tier 2 ("high quality") and Tier 2.5 ("outstanding resource") waters. The lists are included in the regulation, but are presented separately here for quick reference.

314 CMR 4.00 Email for questions: Kimberly.Groff@state.ma.us

314 CMR 4.00: Proposed Amendments & Public Comment

  • There are no proposed regulations out for public comment at this time.

314 CMR 4.00: Recently Promulgated Amendments

  • There have been no recent amendments to these regulations.

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Stormwater Permit Forms

Surface Water Discharge (NPDES-Non-Industrial) Forms

Surface Water Discharge Permit Forms (NPDES General Permits)

Surface Water Discharge (NPDES) Permit Application

These permits control industrial and non-industrial wastewater discharges to surface waters of the Commonwealth. Revised February 2015.

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