Annual Mattapoisett water main flushing begins

May 9, 2023

MATTAPOISETT — It’s that time of year when the Mattapoisett Water and Sewer Department conducts its annual water main flushing. 

Water main flushing began on Monday, May 8 in the Acushnet Road and North Street areas from 7:30 p.m. to 3 a.m.

Flushing will continue in the center of town on Monday, May 15 from 7:30 p.m. to 3 a.m.

Finally, flushing will go on until Friday, May 26 during daytime hours from 8 a.m. to 4 p.m.

“Discolored or red water may be expected along with periods of low water pressure in some areas,” said Mattapoisett Water and Sewer Superintendent Henri Renauld.

Areas most likely to be affected are those south of Route 6 extending from Main Street. Chlorine may be injected into the system before flushing begins and will continue for a period after flushing is completed. 

According to the Massachusetts Department of Environmental Protection, water main flushing moves water through sections of a drinking water distribution system, creating a scouring action to clean the line. The increased flow rate scours the water pipe’s inner walls and helps to remove build-up of naturally occurring debris and sediment.

This water is then expelled through fire hydrants.

According to MassDEP, residents in areas affected by water flushing should collect water for use prior to flushing. 

During flushing, MassDEP recommends that residents do not use the water in their homes as “water quality may be temporarily reduced.”

If water still remains discolored after a flushing period, the state recommends that residents run a cold water tap that is close to their water meter until the water runs clear. 

For more information, contact the Mattapoisett Water and Sewer Department at 508-758-4161.