Portsmouth Water Balance, Presentation to 2023 American Waterworks Association

Identifying the material of a service line can be challenging: local plumbing codes vary and different pipe material and fittings were used during different decades.

Water Service Line Dashboard

Follow the link for the City's Water Service Line Dashboard to view a location's service line materials according to the City's current records. 

Corrosion Control Program

(updated December 15, 2023)

The City of Portsmouth implemented a Lead & Copper Corrosion Control Program in 2003 and has been in compliance with its requirements ever since. The general purpose of the Corrosion Control Program is to minimize the potential for water supplied by the City to leach potentially harmful metals such as lead and copper from pipes, fixtures and solder containing lead.