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Portsmouth Sanitary Sewer Inflow & Infiltration Reduction
VIP Service Area I/I Reduction Phase I & III - Portsmouth
HRSD Capital Improvement Program Project (VP018301/VP018303)

 

Webpage Reviewed: November 18, 2025


HRSD, in coordination with the City of Portsmouth, is undertaking a project to inspect and rehabilitate or replace City sanitary sewer infrastructure at two primary locations. A program of High Priority Projects will be constructed through 2030 as part of HRSD’s Regional Wet Weather Management Plan. Projects were selected based on their ability to provide the greatest environmental benefits. Rehabilitation of sanitary sewer within two areas of the City of Portsmouth are part of the larger High Priority program. This work is ultimately being conducted to reduce the risk of sanitary sewer overflows during heavy rain events such as Nor’easters or hurricanes. Please see the Project Map in the “Project Map” tab below to view a map of the entire project area in Portsmouth. To see more detailed maps of the two sections to be assessed, please click here.

Project Cost: $29,668,000


Notices

 

August 2024 - Smoke Testing Notice

October 2023 - Smoke Testing Notice

August 2023 - Smoke Testing Notice

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