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About the Water and Sewer Department

Important Information & Alerts

10/22/2022: Important Notice Regarding a Processing Error on a Limited Number of Water Bills

In our continuing efforts to improve our utility service to you, the City of Somerville, Department of Water and Sewer, (617) 625-6600 ext. 5850, needs to replace the water meter or meter transmitting unit (MTU) at your home or business and has contracted with Mass Installation, Inc. There is no cost to you for any of the needed work. To schedule an appointment for your meter replacement, please contact Mass Installation, Inc. (MIi), our Installation contractor, at 1-800-933-1360, Monday - Friday, 8:00 a.m. - 5:00 p.m. You may also leave a message with their 24-hour answering service. MIi will attempt to arrange an appointment time that is convenient for you. The average installation time is approximately less than one (1) hour.

You may also go to to request an appointment time through our website, and MIi will contact you to confirm your appointment.

Participation In the City of Somerville Meter Replacement program Is MANDATORY. Thank you for your prompt response and cooperation.

By order of the Mayor, City offices are closed to the public.

If you have a water or sewer related emergency, please call 311 (617-666-3311 outside of Somerville).

If you need a final water reading for property sale, please fill out the "Request a Final Water Bill" form in your browser. Due to office closures, final bills will be emailed or mailed to you. Payment will need to be mailed to the Treasurer's Office at City Hall or placed in the lockbox mailbox outside of City Hall.

Treasurer/Collector's Office
City Hall
93 Highland Ave.
Somerville, MA 02143

Because so many have been negatively impacted by current economic conditions, the Mayor has also authorized the treasury department to waive interest and penalties on tax, water and excise bills that were due on March 10th or later, provided those bills are paid by June 29th.

Find updates and information on City services and the COVID-19 crisis at

The Water department routinely replaces automated meter readers and water meters on the inside and outside of homes and businesses in order to ensure equipment functions properly. Department staff make every effort to contact property owners regarding necessary repairs. When contact information is incorrect or no response is received, Department personnel may visit a property to obtain access to malfunctioning equipment. In all cases, personnel will be upholding recommended health guidelines, including wearing personal protective equipment (PPE) and practicing safe physical distancing. Meter technicians and supporting personnel will always be wearing identifiable uniforms that say either "City of Somerville" or "Mass Installation." Please call 311 or e-mail with any questions or concerns.

It is the Water Department’s mission to maintain and improve the City’s potable water distribution system to ensure high quality and dependability, in a fiscally responsible manner, using state of the art technology. The Water Department is responsible for the operation and maintenance of the City's approximately 118 miles of water mains, 1,500 fire hydrants and 15,600 water service connections and water meters. Department employees also assist in snow removal, emergency response, and other Public Works Departmental functions as needed.

Water Billing and Services

  • Responding to emergency calls: no water
  • Mark outs (Digsafe)
  • Installation of meters and automatic reading devices
  • Inspections of new water mains and water lines
  • Flushing water mains
  • Replacing water mains
  • Repairing/replacing hydrants
  • Exercising valves/repair or replace valves
  • Water sampling (DEP required)
  • Meter reading
  • Billing       

Sewer Services

  • Responding to emergency calls: backups
  • Catch basin cleaning
  • Repairing City sewers
  • Reducing Inflow and Infiltration
  • Monitoring Pump Stations 


  • Pay bills online
  • In person at City Hall, Treasurer's Office, 93 Highland Avenue
Contact Information
Demetrios G. Vidalis, PE
Director of Water & Sewer

Monday - Friday
8 a.m. - 4 p.m.

Phone Number
Fax Number

17 Franey Rd.
Somerville, MA 02145
United States

Employee Directory

Water Billing & Services

10/22/2022: Important Notice Regarding a Processing Error on a Limited Number of Water Bills

Contractor Resources


Quality Reports & Protection

MWRA water test results

Important Message to Customers About Lead in Drinking Water

2016 Independent School Drinking Water Testing Results

Park and Playground Water Fountain Lead Testing Results

MassDEP School Drinking Water Copper & Lead Testing Program Annual Results

In conjunction with the requirements of the Department of Environmental Protection 310 CMR 22.22, the following procedures apply:

  • No plumbing permit shall be issued for cross connection installations requiring Reduced Pressure Zone Backflow Preventers or Double Check Valve Assemblies until the application for such permit is accompanied by a letter of approval from the Department, its Designee or public water system. (
  • The Owner or Agent must deliver design data sheets, a drawing of the plans for installation of the reduced pressure backflow preventer or double check valve assembly, along with a $25 permit fee, to the Water Superintendent prior to the issuance of a building permit and prior to the installation of the device.
  • The Water Superintendent will issue a permit.
  • If the device is installed prior to obtaining the permit, the permit fee will be doubled to $50.
  • No more than fourteen days from the installation of the device, the Owner or agent must schedule an appointment for inspecting the device installation.
  • No water will be turned on unless the Water Superintendent has notification from the Cross Connection Control tester that the device passes the required test. 

For approval of new water line installation/upgrade and to have the water turned on:

  • Owner/agent must deliver a copy of the utility plans to the Water Superintendent.
  • The Water Superintendent issues the permit for a water tap based on these plans.
  • Prior to backfilling the trench, the owner/agent must call the Water Foreman for an inspection of the piping and the meter installation. 

Cross Connections Control Fact Sheet

Forms & Information



Easy Ways to Protect Our Waterways


Programs & Initiatives

Lead Service Line Replacement Program
Have your property’s lead or non-copper water service line replaced, free of charge.

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