East Boston Sewer Separation Project

East Boston

This project is the fourth phase of a multi-year program to separate combined sewers in East Boston. Sewer separation involves installing new storm drains to carry stormwater and using the existing combined sewer to carry sewage. This work will improve water quality by reducing the number and volume of combined sewer overflows (CSOs) to Chelsea Creek and Boston Harbor, which currently occurs when heavy rainfall inundates the combined sewer. In addition to installing new storm drains, the Commission will be replacing or repairing deteriorated sewer pipes and replacing aged water mains.

Construction will take place under five (5) separate contracts that will be implemented in various East Boston neighborhoods. Construction is expected to take six years to complete, beginning with the first contract starting in September 2025 and ending with completion of the final contract in the fall of 2031.

Please see the linked Project Documents to view the status of the current project as well as the overview map of Phase IV.

Contract Number:

21-309-002

Project Summary

21-309-002 Funding The East Boston Sewer Separation Project is funded by the Massachusetts Clean Water State Revolving Fund in partnership with the U.S Environmental Protection Agency. 

Street Limits:

• Eagle Square, East Eagle Street to Chelsea Street
• Chelsea Street, Bennington Street to Day Square
• East Eagle Street, Chelsea Street to Putnam Street
• Lexington Street, Prescott Street to East Eagle Street
• Trenton Street, Putnam Street to East Eagle Street
• Prescott Street, Trenton Street to Lexington Street
• Princeton Street, Prescott Street to Eagle Square
• Saratoga Street, Prescott Street to Shelby Street
• Bremen Street, Saratoga Street to Neptune Road
• Glendon Street, Condor Street to Falcon Street
• Falcon Street, Glendon Street to Putnam Street
• Condor Street, Glendon Street, to Putnam Street
• Frankfort Street, Neptune Road to Swift Street
• Swift Street, Frankfort Street, to Swift Terrace
• Neptune Road, Frankfort Street to Vienna Street
• Bennington Street, Neptune Road to Swift Street
• Vienna Street, Neptune Road to Bennington Street
• White Street, Trenton Street to Putnam Street
• Route 1A, Addison Street to Boardman Street

Anticipated Impacts

The anticipated impacts include water service interruptions, equipment noise, traffic and parking modifications, rodent activity, dust, and general construction impacts. The contractor will be required to minimize impacts to the extent feasible. Notifications will be distributed by street prior to work commencing, as well as at least 24 hours prior to any planned water service interruption.

Surface Restoration

Temporary restoration of roadways, sidewalks, and other areas disturbed by construction activities will be completed under this contract immediately following the work. Permanent restoration will occur under a separate paving contract following completion of the project.

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