Water Main Flushing

Water main flushing is complete for 2024.

Why flush the water distribution system?

Flushing is required as a form of routine maintenance of the water distribution system in order to flush out sediment within the water mains and their valves.  Flushing also removes biofilms, which occur naturally in water mains.  Flushing will help to reduce Total Tri-Halomethanes in the distribution system and help to maintain water quality.  The current disinfectant, chloramines, is used to protect the water in the distribution system, and becomes less effective as water collects and becomes older.  A new flushing program has been designed to achieve proper internal “pipe scouring” velocities for better water main cleaning.  Discoloration of the water can and may occur.  Laundry should not be done during times of discoloration, as clothes may become stained.  Residents may also experience low water pressure or no pressure for short periods of time.  It is recommended not to use hot water if you are experiencing low water pressure or have discolored water.  This will allow you to avoid burning out heating elements or filling a hot water heater with rusty water.

More information

The Exeter Water and Sewer Department regrets any inconvenience this may cause and appreciates your cooperation. For concerns please call:
Surface Water Treatment Plant (603) 773–6169
Water Sewer Manager (603) 773-6157