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Boston Harbor and Massachusetts Bay
Massachusetts Water Resources Authority


Outfall Monitoring Science Advisory Panel

The Massachusetts Water Resources Authority's Discharge Elimination System (NPDES) permit allows MWRA to discharge effluent from the Deer Island Wastewater Treatment Plant into Massachusetts Bay. The Outfall Monitoring Science Advisory Panel (OMSAP) was created by the state Department of Environmental Protection and the federal Environmental Protection Agency to assist in evaluating monitoring results and developing appropriate revisions to the permit-required outfall monitoring plan.

Below are links to briefing materials on the Outfall Monitoring Program, prepared for OMSAP review:

OMSAP Meeting Materials:

February 2018

October 2016

September 2014

April 2013

June 2011

October 2009

June 2009

Older OMSAP Meeting Minutes (U.S. EPA website)

Many of our reports are in PDF format, which requires Adobe Acrobat Reader®, a free program available from Adobe Systems.