Water News


Public Works crews addressing water main break on Route 1; overnight work to occur

April 18, 2019

A water main break has occurred on Route 1 near the location of Mr. Mac’s restaurant. Public Works crews have shut off the water main while they address this issue; this affects buildings along Route 1 heading in the direction of Rye, as well as surrounding side streets with the exception of Ocean Road. Crews anticipate the water to be turned back on around noon to 1 p.m. this afternoon. Crews will be shutting the water main off again overnight from midnight to 4 a.m. to permanently fix this break.


Water flushing operations beginning Monday, April 15th

April 15, 2019

The Water Division will start their twice annual routine hydrant flushing of the City’s 190 miles of water mains to remove sediment buildup on Monday, April 15th. This work will occur on both public and private hydrants spanning New Castle, Rye, Greenland, Newington and Portsmouth, lasting about six to eight weeks. Between 7 p.m. and 11 p.m., Monday through Thursday, crews will open select fire hydrants, releasing water with enough velocity to carry sediment out of the pipes.


Portsmouth Water Division offers update on PFAS regulations

January 3, 2019

On December 31, 2018, the New Hampshire Department of Environmental Services (NHDES) initiated rulemaking to establish Maximum Contaminate Levels (MCLs) and Ambient Groundwater Quality Standards (AGQS) for four per- and polyfluoroalkyl substances (PFAS) - perfluorooctanoic acid (PFOA), perfluorooctanesulfonic acid (PFOS), perfluorononanoic acid (PFNA) and perfluorohexanesulfonic acid (PFHxS) to ensure greater protection of public health related to the consumption of drinking water.


Portsmouth acquires large conservation easement near Bellamy Reservoir to assist water quality efforts

December 19, 2018

The City of Portsmouth’s Water Division is pleased to announce the acquisition of a conservation easement on 72 acres of property adjacent to the Bellamy Reservoir in Madbury, New Hampshire from Dave Olson. This easement was realized through the combined efforts of the City, the Southeast Land Trust (SELT), the Town of Madbury and the State of New Hampshire’s Drinking Water and Groundwater Trust Fund.


Lead & Copper Corrosion Control Program Update

December 10, 2018

Portsmouth water remains in compliance with quality requirements for lead

The City of Portsmouth completed its recent round of sampling under the Lead & Copper monitoring program and is pleased to report that the water system remains in compliance with the current lead and copper regulations. This sampling is required by the U.S Environmental Protection Agency (EPA) under the Safe Drinking Water Act (SDWA) and is administered by NH Department of Environmental Services (NHDES) through the Lead and Copper Rule (LCR).


November 2018 Water Supply Status Report

November 7, 2018

Higher than normal precipitation over the past three months have caused the quantity of available groundwater and surface water to be greater than normal for this time of year. The quality of the surface water has greatly improved and stabilized since the dynamic water quality changes that occurred in late September and October.