Water News


Portsmouth Water Division Releases Annual Drinking Water Quality Reports

May 22, 2020

Each year, the Environmental Protection Agency (EPA) requires community water systems to deliver a Consumer Confidence Report – also known as an Annual Drinking Water Quality Report – to their customers. These reports, which are mailed out to water customers by July 1st, provide information about their drinking water quality from the previous year of sampling including a summary of detected contaminants, compliance, and educational information.


State Sets PFAS Water Quality Standards

July 19, 2019

State of New Hampshire Approves New Standards for Four PFAS Compounds

The City of Portsmouth is currently in compliance with current and proposed drinking water standards for Perflourinated compounds (PFAS).


June 2019 Water Supply Status Report

June 3, 2019

Despite the cool and wet weather pattern we have been experiencing in Southern New Hampshire, this area continues to have below normal precipitation. Precipitation since December 2018 is only 65% of normal. However, the cooler weather has resulted in lower than normal irrigation and water demands in our system.


Public tour of the Peirce Island Wastewater Treatment Facility on Thursday, June 13th

May 28, 2019

Guided public tours of the Peirce Island Wastewater Treatment Facility (WWTF) construction site will be conducted on Thursday, June 13, 2019 from 5 p.m. to 7 p.m. City staff, along with others involved in the construction of the Peirce Island WWTF upgrade project, will be guiding interested parties through the construction site to provide an opportunity to observe the status of the ongoing construction.


May 2019 Portsmouth Water System PFC Sampling Update

May 28, 2019

The City of Portsmouth’s water supply staff continue to monitor all of our public water supply sources for Perfluorinated compounds (PFAS) every six months. The following report details the most recent analysis of the Portsmouth supply sources taken in April 2019.


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.