Public Health Warning: Merrimack River CSOs

Public Health Warning Graphic

TUESDAY, JULY 19, 2022

The City of Newburyport Health Department has issued a Public Health Warning due to multiple Combined Sewer Overflows (CSOs) occurring in the early hours of Tuesday, July 19, 2022 in the following communities:

Haverhill (start time – 12:30 AM)
Lawrence (start time – 1:50 AM)
Lowell (start time – 1:10 AM)

The Newburyport Health Department recommends that the public, including pets, avoid contact with the Merrimack River for 48 hours following a sewage discharge or overflow due to the increased health risks from bacteria and other pollutants associated with urban stormwater runoff and discharges of untreated or partially treated wastewater.

For more information on beach water quality testing, please visit

For more information on shellfish closures, please visit