BWSC selects Stantec for next phase of East Boston Sewer Separation project

Design and engineering firm Stantec has been selected to lead design services on Phase IV of the Boston Water and Sewer Commission’s (BWSC) East Boston Sewer Separation project. The project is part of a comprehensive 30-year, $150 million initiative to reduce pollutants discharged to Boston Harbor and its tributary waters, and to modernize water infrastructure in the rapidly developing neighborhood.

Historic cities like Boston face a unique challenge in effectively managing stormwater as many older systems feature combined sewers that carry both stormwater and sewage. During heavy rainfall, these systems are prone to being overloaded and are designed to release excess flows into local bodies of water. To better manage overflows and protect water quality - particularly as rainfall events are becoming more frequent and more intense - the Massachusetts Water Resources Authority is implementing a Combined Sewer Overflow (CSO) Control Program that involves modernizing this infrastructure with the latest technology. East Boston is among the communities at the center of this effort.