$120-million sewer upgrade improves water quality in Lynn, Mass.
(UI) - The Lynn Water and Sewer Commission has completed a $120 million sewer separation project in West Lynn, Mass., marking a major step in reducing combined sewer overflows (CSOs) and improving water quality in the Saugus River and Lynn Harbor.
The project separates stormwater and wastewater flows, preventing untreated discharges during heavy rain events—a longstanding issue in older systems with combined sewers. According to Commonwealth Beacon, work included installation of more than 26,000 linear feet of storm drainage infrastructure and construction of a 92-million-gallon-per-day stormwater pump station.
Officials said the upgrades are part of a broader, federally mandated effort to address water quality violations and modernize the city’s aging wastewater system. The project stems from a performance agreement with regulators to reduce CSOs and improve environmental outcomes, Commonwealth Beacon reported.
Beyond environmental benefits, the improvements are expected to support redevelopment along Lynn’s waterfront, where long-standing pollution has limited investment. The project is one of several initiatives aimed at restoring the area and unlocking future economic growth.
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