Water Operations

Water News

PW

Water Division Issues Third Quarter 2025 Status Report

October 23, 2025

The City of Portsmouth’s water supply sources have shown resilience in the face of ongo...

COP

City Issues Water Supply Status Report Encouraging Efficient Water Use Due to Severe Drought Conditions

September 25, 2025

The City of Portsmouth NH Department of Public Works Water Division has issued a Water Supply Status Report, a...

PW

DPW Begins Limited Fall Hydrant Flushing

September 16, 2025

The City of Portsmouth Department of Public Works Water Division begins its seasonal routine flushing of fire ...

COP

DPW Water Division Notifies Affected Residents of Service Line Inventory Results

November 8, 2024

The U.S. Environmental Protection Agency (EPA) required that all public water suppliers, including the City of...

The Water Division

The Water Division performs the following functions for the communities served by the Portsmouth regional water system that include Portsmouth, Pease Tradeport, Newington, New Castle, Greenland and portions of Rye and Madbury:

Maintains water mains, hydrants and valves
Maintains water services to the customer's shutoff valves (the customer is responsible for the private portion of their service beyond the shutoff valve)
Maintains/installs/reads water meters
Performs backflow testing and cross connection control program
Manages the Bellamy Reservoir and Madbury Surface Water Treatment Facility together with eight groundwater wells