Boston’s water quality sampling taken of 33 homes with lead service lines during the fall of 2025 sampling found elevated levels of lead in drinking water in 4 homes. As a reminder, all of Boston’s water mains are lead free. However, some older homes in Boston may have a lead water service line. BWSC has produced a new PSA on Lead you can find in the notice.
The impacted area is from Broadway to Andrew Square and the Expressway to Telegraph Hill, and the goal is to remove as much stormwater as possible from the existing combined sewer system.
Contract Number:
The Boston Water and Sewer Commission’s South Boston Sewer Separation Project involves separating the combined sewer system in South Boston into separate pipes for sewage and stormwater. The impacted area is from West Broadway to Andrew Square and the Expressway to Telegraph Hill.
The purpose of this project is to reduce pollution levels in Boston Harbor by decreasing the number and volume of Combined Sewer Overflows into Fort Point Channel and Boston Harbor by removing the stormwater from existing combined sewer system. This project will be completed under five (5) construction contracts.
Contract I: Contract No. 20-309-012
Status: Complete
Contract II: Contract No. 21-309-012
Status: In progress
Contract III: Contract No. 22-309-012
Status: In progress
Contract IV: Contract No. 23-309-012
Status: Planned to begin April 2026
Contract V: Contract No. 24-309-012
Status: Planned to begin April 2027
Funding
The South Boston Sewer Separation Project is funded by the Massachusetts Clean Water State Revolving Fund in partnership with the U.S Environmental Protection Agency.
Anticipated Project Duration:
Preliminary Design: Complete
Final Design: Fall 2018 to Spring 2025
Construction: Summer 2021 to Summer 2029
Sign up to receive project updates
