Project Overview
The Ceres Street Sewer Lining Project is to extend the lifetime of the sewer main running under Ceres Street. The pipes are aged and in poor condition, which is allowing large quantities of seawater to enter the sewer collection system. The seawater is causing corrosive damage to the City’s infrastructure as well as increased costs related to pumping and treating otherwise clean water. These factors, as well as the increased chances of a combined sewer overflow event, make this project a priority.
To fix this problem the City is working with Vortex, a specialty contractor in trenchless pipe repair technologies. The contractor will install a structural liner inside of the sewer main to create a new pipe inside of the old pipe. This will stop the seawater from intruding into the sewer main without the need to dig up Ceres Street to install new pipe. While this method minimizes disruption, there can be no water in the pipes during this time.
Area of Impact
Project Updates
Subscribe to UpdatesFor the week of November 9, 2026 Nov 9, 2026
Work continues on Ceres Street late this week and early into next week. Residents will experience temporary water service interruptions while crews work on the section of sewer main connected to their building. Residents should only experience one interruption per building and will be notified directly 48 hours in advance of that interruption. Zach Cronin is the contact point at the City for this work and can be reached by phone at 603-610-7304 or by email at zmcronin@portsmouthnh.gov.
Update for Early Monday Nov. 9 Work Nov 6, 2026
Crews will begin work on Monday, November 9, 2026, at 4 am to align with the tides.
For the week of November 2, 2026 Nov 2, 2026
Ceres Street Lining begins today, November 2, 2026. Crews will be in the area for a few weeks. Residents in the area will be alerted to any water service interruptions 48 hours in advance.
Project FAQ
What is the Ceres Street Lining Project?
The Ceres Street Sewer Lining Project is to extend the lifetime of the sewer main running under Ceres Street. The pipes are aged and in poor condition, which is allowing large quantities of seawater to enter the sewer collection system. The seawater is causing corrosive damage to the City’s infrastructure as well as increased costs related to pumping and treating otherwise clean water.