BOSTON—October 14, 2022—The next is a public well being warning associated to a latest sewage discharge, often known as a mixed sewer overflow (CSO). State rules require native public well being departments to offer discover to the general public when these discharges might create a danger to public well being, together with when a discharge lasts for greater than two hours.
Massachusetts Water Sources Authority Outflow MWR203, situated within the Higher Interior Harbor, upstream of North Washington St. Bridge, skilled a handled discharge or overflow beginning on October 14th at 1:01am, creating a possible public well being danger. This overflow ended at 3:02am and this advisory will expire 48 hours after that point. Verify the Massachusetts Water Sources Authority web site right here for present updates about this discharge. This occasion might probably have an effect on waters in Boston Interior Harbor.
The general public is suggested to keep away from contact with affected water our bodies for at the very least 48 hours after a sewage discharge or overflow, throughout rainstorms, and for 48 hours after rainstorms finish, as a consequence of elevated well being dangers from micro organism or different pollution related to city stormwater runoff and discharges of untreated or partially handled wastewater.
A mixed sewer overflow happens when a big storm overwhelms the mixed sewerage system inflicting rainwater to combine with wastewater and discharge to a close-by water physique. This prevents sewage backups into houses and companies.
Extra details about CSOs and public well being is offered at www.boston.gov/cso.