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M Street Diversion Sewer Project

Overview

As part of the Clean Rivers Project, the M Street Diversion Sewer was constructed to divert flows from existing combined sewers using three diversion chambers. The diversion chambers convey flow to a series of large sewer tunnels below M Street SE, which connect to the Anacostia River Tunnel near the intersection of Water Street SE. The M Street Diversion Sewer components are designed to deliver a total of 695 million gallons per day of combined sewer flows to the Anacostia River Tunnel. Work along M Street SE also included the rehabilitation of key components of DC Water's existing infrastructure.

Schedule

Construction of the M Street Diversion Sewer was completed in 2014. The diversion chambers and sewers will be placed into permanent operation in March 2018 when the Clean Rivers system is brought online.

Project Location Map