Wastewater & Sewer
Sewer Division Information
Sewage collection and treatment is the responsibility of the Sewer Division of the Department of Public Works (DPW). This division maintains and operates the City’s wastewater system. The wastewater system includes:
- 120 miles of sewer collection system
- 20 wastewater pump stations
- 3 EPA permitted combined sewer overflows
- Peirce Island Wastewater Treatment Facility
- Pease Wastewater Treatment Facility
The City’s sewer system provides service to over 90% of the City’s developed land area. There are some areas of the City that do not have access to a public sewer system and use septic systems for wastewater disposal. The City’s collection system extends into portions of Greenland and Rye and the City provides treatment to all the wastewater from the Town of New Castle.
The City has a number of ongoing operational and capital projects as well as ongoing long term programs. Major capital projects include the upgrade to the Peirce Island Wastewater Treatment Facility, a new Headworks Building at the Pease Wastewater Treatment Facility and a major overhaul of the Lafayette Road Pumping Station. The City’s long term programs include removal of extraneous water in the sewer collection system through a sewer system evaluation survey and continued work on reducing combined sewer overflows through implementation of the City’s Long Term Control Plan.
Funding for operation of the sewer division is provided through the rate payers who contribute to the Sewer Enterprise Fund. The City has approximately 6,400 sewer customers. The City makes upgrades to components of the wastewater system through the Sewer Enterprise Fund. Many of these projects are regulatory driven and for major capital project funding needs are identified as part of the City’s Capital Improvements Plan.
For sewer related emergencies, contact the Department of Public Works Dispatch at (603) 427-1530.
Questions/Answers - City Council Work Session (Water/Sewer Budget): Please click here to review the Questions/Answers Document from the City Council Work Session (Water/Sewer Budget FY 19) May 16, 2018
July 24, 2018
Guided public tours of the Peirce Island Wastewater Treatment Facility (WWTF) construction site will be conduc...Read More
April 13, 2018
The City plans to continue to authorize Saturday and/or Sunday construction work to take place on the Pei...Read More
February 27, 2018
To better keep residents apprised of occurrences of combined sewer overflows (CSOs), the Portsmouth Sewer Divi...Read More
February 2, 2018
As anticipated, the City has authorized work on the Peirce Island Wastewater Treatment Facility Upgrade to tak...Read More
ALARM START for 10A A combined sewer overflow event has begun at Portsmouth Site 10A to South Mill Pond. See the... https://t.co/y5KwrVycVc
We are currently conducting some routine maintenance on our measuring devices, so you may see some test tweets come through. Please note that tweets sent out today, 5/22, are TESTS and there are NO overflow events occurring. Thank you! #PortsmouthNH
ALARM START for 013 A combined sewer overflow event has begun at Portsmouth Site 013 (Deer St) to the Piscataqua... https://t.co/rQnX1JhORN