The City's contractor, National Water Main, will be lining several sewer and drain lines throughout the City. This method, called Cured-in-Place Pipelining, will provide a new, joint-less sewer pipe connection that minimizes root and water infiltration problems, improves flow, and provides for a more structurally sound pipe without the need for excavation.
Impacted residents will receive notification 7 days in advance directly from National Water Main about when work will occur in their area. During the specified time, residents are asked to limit the use of water going down the drain. Once service is restored, residents will be promptly notified.
No Parking signs will be posted 48-hours in advance. Please take note.
During certain phases of the operation, residents may see large amounts of steam coming from the manhole and detect an odor. This is part of the lining process.
Over the next several months, the City’s contractor, National Water Main, will be lining several sewer and drain lines throughout the City using a method called Cured-in-Place Pipelining. This system will provide a new, joint-less sewer pipe connection for your area that minimizes root and water infiltration problems, improves flow, and provides for a more structurally sound pipe without the need for excavation.
Impacted residents will receive a one-week notice, and a 24-hour notice before the work begins.
The following schedule is subject to change due to weather or roadway conditions:
Week of January 19, 2026
Speridakis Terrace (Beginning to Easement) (1/20)
Putnam Ave (Ballord Place to River St) (1/21)
Ballord Place (1/21)
Porter Rd (60 Porter Rd to Mass Ave crosswalk) (1/22)
Beech St (Mass Ave to Orchard St, Somerville line to Orchard St) (1/23)
Week of January 26, 2026
Webster Ave (City Line to Columbia St) (1/26 and 1/27)
Palermo St (1/28)
Antrim St (42 Antrim St to 119 Antrim St) (1/29)
Antrim St (119 Antrim St to Cambridge St) (1/30)
Week of February 2, 2026
Elm St (Webster Ave to Cambridge St) (2/2)
Hawthorn St & Mt Auburn St (Intersection to Longfellow Park) (2/3)
Hawthorn St & Mt Auburn St (Intersection to Ash St) (2/3)
Grove St (169 Grove St to Belmont line) (2/4)
Valentine St (24 Valentine St to Brookline St) (2/6)
Week of February 9, 2026
Somerville Ave (Target to Dunkin Donuts) (2/8 night)
Mass Ave (1945 Mass Ave to Beech St) (2/8 night)
North Mass Ave Sidewalk (1902-1950 Mass Ave (2/9 night)
What to expect during the lining
- Work hours are Monday-Friday 7 a.m.-5 p.m.
- Once the work is done for the day, streets will be reopened to regular traffic.
- No Parking signs will be posted 48-hours in advance; please be sure to check dates/times.
- Some driveways may be blocked during this work. Impacted properties will be separately notified.
- During certain phases of the operation, residents may see large amounts of steam coming from the manhole and detect an odor. This is part of the lining process.
If you have questions or concerns regarding this project, please contact National Water Main Cleaning Co. Main Office 781-828-0863, Supervisor: Tarek Radwan 617-908-1626.
In case of a construction emergency, please call the Cambridge Public Works Department 24-hour hotline at 617-349-4800.
This work is expected to take place year-round throughout the City.
What kind of impacts can I expect during this work?
Residents will be notified 48-hours in advance of work being performed on the specific pipe that your home is connected to. During this period of work, your property's sewer service connection will be completely sealed off from the City's mainline in the street.
Do I have to limit water use when work is being done at my location?
Yes. You will be notified with a specific date and time when the pipe connected to your home is being rehabilitated. During this time, please limit water use. Do not use washing machines or dishwashers. If you must shower, leave the water in the tub until your service has been restored. Any sump pumps connected to the sewer system must be disconnected and/or discharged to prevent backups.
Are there bad odors associated with this work?
During certain phases of the operation, you may detect an odor. Odors are most likely to occur in houses or buildings with a faulty, or non-existent trap. In most cases, any odors can be minimized by pouring several gallons of water down your sinks, showers, toilets, etc, and by opening your windows.
How will I know when crews are done working on my section of the sewer?
When your service has been restored, you will be promptly notified with another notice.
National Water Main Cleaning Co.
Supervisor: Tarek Radwan 617-908-1626
Superintendent: Henry Boissonneault Jr. 617-483-0960
Main Office: 781-828-0863
DPW 24-hour emergency number: 617-349-4800