What We Do

Northeast Boundary Neighborhood Protection Project


The Northeast Boundary Neighborhood Protection Project is a three-step infrastructure initiative located on and near the former McMillan Sand Filtration site north of Bloomingdale. It will reduce the pressure on the undersized section of the Northeast Boundary Trunk Sewer that serves Bloomingdale and LeDroit Park by doing the following:

  1. Adding 6 million gallons of stormwater storage from two stormwater lines that run east and west of the McMillan site, using existing and new facilities on the site itself. (Estimated completion: Spring 2014)
  2. Adding 6 million gallons of stormwater and wastewater storage from a combined-sewer line that runs west of the Washington Aqueduct McMillan treatment plant, in a new tunnel under First Street NW. (Estimated completion: Spring 2016)
  3. Re-aligning the Northeast Boundary section of the Clean Rivers Project, to make it more effective in preventing flooding and require tunneling under less private property, and accelerating construction of this section. (Estimated completion: 2022)
Northeast Boundary Neighborhood Protection Project Diagram
Northeast Boundary Neighborhood
Protection Project Diagram
(Click to enlarge)
Inside the Main Sewage Pumping Station
Clean Rivers Project - Anacostia
Tunnel System Diagram
(Click to enlarge)

This project is the largest and most visible work product of the Mayor's Task Force on the Prevention of Flooding, co-chaired by DC Water General Manager George Hawkins and City Administrator Allen Lew. Mayor Vincent C. Gray convened the task force in August 2012, and its final report is due December 31, 2012.

The total cost of the Northeast Boundary flood-control components the Clean Rivers Project is estimated at $600 million. The additional improvements from the Northeast Boundary Neighborhood Protection Project will add approximately $40 million to the cost.

The following is DC Water's engineering analysis of how rain storms similar to those of 2012 - and heavier - would affect various locations one the Northeast Boundary Neighborhood Protection Project improvements are in place.




Please watch this space for updates as construction on the project begins and progresses.

What We Do