FY27 Rate and Fee Update
June 23, 2026Effective July 1, 2026, the City of Portsmouth will implement changes to its water and sewer utility rate structure, rates, and fees as part of the adopted Fiscal Year 2027 (FY27) Budget. These changes are based on recommendations from the City's recent Water and Sewer Rate Study.
Potential for Discolored Water in Greenland
June 16, 2026On Wednesday June 17th, 2026, the City of Portsmouth Water Division is beginning a groundwater well pumping test on the Greenland Well. Due to the high rate of flow that will be pumped into the water system, there is a potential for a temporary discoloration of the public water supply in the Greenland area. Discoloration is caused by the mobilization of iron and manganese sediments that have accumulated in the water mains. These deposits are not harmful, but could stain clothes and fixtures, and impart a metallic taste to the water.
City Water Division Issues Water Use Advisory
May 15, 2026Updated: June 22, 2026
The Department of Public Works Water Division has issued a Water Use Advisory in response to ongoing drought conditions affecting the Seacoast region of New Hampshire.
DPW Releases Q1 2026 Drinking Water Supply Updates for the Portsmouth and Pease Tradeport Water Systems
April 28, 2026The City of Portsmouth’s water supply sources have continued to perform reliably despite ongoing drought conditions that began in June 2025.
DPW Resumes Water Service Line Inventory "Potholing" in Maple Haven Neighborhood
April 2, 2026The U.S. Environmental Protection Agency (EPA) Revised Lead and Copper Rule (LCRR) requires all public water suppliers to inventory the type of material used in every water service line connected to their water system. The City of Portsmouth submitted its initial inventory of service line materials in October 2024 and has since continued to identify materials that were unknown at that time.
DPW to Conduct Routine Spring Hydrant Flushing Starting April 6, 2026
March 30, 2026The City of Portsmouth Department of Public Works Water Division begins its seasonal flushing of fire hydrants and water mains on Monday, April 6, 2026. The flushing will take place at various locations, Monday through Thursday, between 7 pm and 11 pm, and is expected to take six weeks to complete.
DPW Releases 2025 Drinking Water Supply Report for Portsmouth and Pease Tradeport
January 26, 2026The City of Portsmouth's 2025 Water Supply Status Report is now available. This report provides a comprehensive summary of water supply information collected over the course of 2025 and is intended to keep customers informed about current conditions and planning efforts.
FAQs - Service Line Notices
November 17, 2025FAQs For Water Customers Receiving Notice of a Galvanized or Unknown Service Line Material
The latest US Environmental Protection Agency (EPA) Lead & Copper Rule Improvements requires all public water suppliers to inve
City Issues Water Supply Status Report Encouraging Efficient Water Use Due to Severe Drought Conditions
September 25, 2025The City of Portsmouth NH Department of Public Works Water Division has issued a Water Supply Status Report, an update of its August report, to inform Portsmouth Water Division customers of the latest water supply conditions.
City Water Division Issues Water Supply Status Report
September 24, 2025The City of Portsmouth NH Department of Public Works Water Division has issued a Water Supply Status Report, an update of its August report, to inform Portsmouth Wa