South Boston
South Boston, MA water profile — supply sources, drought status, wastewater reuse, and the key water issues facing the city.
South Boston is a major U.S. city and the 2nd-largest in Massachusetts, home to roughly 571,281 residents. South Boston's drinking water comes largely from the same regional sources that serve Massachusetts: Quabbin Reservoir, rivers, and groundwater.
As elsewhere in Massachusetts, the central challenge is aging infrastructure. The Quabbin system gives Boston a robust supply, while smaller systems wrestle with PFAS and lead pipes.
Massachusetts reuses an estimated 4% of its treated wastewater and maintains minimal reuse programs; South Boston tracks moderate to severe drought conditions on the U.S. Drought Monitor scale.
Explore the Massachusetts profile for statewide context, or dig into the water issues shaping South Boston below.
At a glance
- Population ~571,281 (2nd-largest in Massachusetts)
- Primary sources: Quabbin Reservoir, rivers, and groundwater
- Drought: moderate to severe conditions
- State reuse rate: ~4% of wastewater
Statewide drought history
% of Massachusetts in severe+ drought (Severe (D2) now).
Source: U.S. Drought Monitor
Common questions
Is tap water safe in South Boston?
South Boston is served by community water systems regulated under the Safe Drinking Water Act. Statewide, 22.4% of Massachusetts's systems have a recent health-based violation. Check your provider's annual Consumer Confidence Report for local results.
Where does South Boston get its water?
South Boston draws from the same regional sources that serve Massachusetts: Quabbin Reservoir, rivers, groundwater.
Related water issues
Aging Infrastructure
Much of America's water infrastructure is decades past its design life, leaking trillions of gallons a year and demanding hundreds of billions in reinvestment.
ExplorePFAS Contamination
Per- and polyfluoroalkyl substances persist in water supplies for decades. New federal limits are forcing utilities nationwide to invest in advanced treatment.
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