Bacteria at Boston Harbor Beaches
Beach water quality
is generally good, but there is no clear trend, with year-to-year
variations at each beach.
HARBOR BEACHES ARE
SWIMMABLE MOST OF THE TIME
The water quality variations of Boston Harbor's
beaches reflect a complex urban coastline. For example, Tenean Beach shows an increased frequency of high
counts during rainy summers, but Wollaston does not.
Efforts by MWRA and
communities, including MWRA’s CSO Control Plan, have significantly reduced the volume of untreated
CSO discharges to the harbor since the late 1980s. Treatment plant discharges and much of the combined sewage in
the harbor have been eliminated.
on harbor beaches