Fire Hydrant Testing April 30-June 22 May Cause Water Discoloration


hydrant testing photo

Cambridge Water and Fire departments will be conducting annual fire hydrant maintenance and testing weekdays between 9 a.m.-2 p.m., from April 30-June 22.

Hydrant testing helps ensure maximum operability. This process can disturb sediment that naturally occurs in the water piping system and may cause discoloration of water from faucets and toilets for several hours after testing. Discolored water does not usually present a health hazard though concerned residents should avoid drinking it.  Check your water before doing laundry as the discolored water may stain clothes.

The Water Department can provide a wash additive to remove stains. Please see the schedule below or call the Cambridge Fire Department at 617-349-4921 between 8-8:45 a.m. for daily test locations.  For questions on water quality, call Ed Dowling, Cambridge Water Department at 617-349-4780. To report discolored water call the main Water Department number at 617-349-4770. 

For general reference dates for Cambridge neighborhoods, please click here.   Please note that these dates for testing remain flexible due to weather and Fire Department activities.

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Visiting City Hall

Cambridge City Hall

795 Massachusetts Ave
Cambridge MA, 02139
Ph: 617-349-4000
TTY: 617-349-4242

Hours of Service

Monday: 8:30am-8pm
Tuesday-Thursday: 8:30am-5pm
Friday: 8:30am-12pm

Richard C. Rossi
City Manager

Lisa C. Peterson
Deputy City Manager