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:
- 115 miles of sewer collection system
- 20 wastewater pump stations
- 3 EPA permitted combined sewer overflows
- 2 Wastewater Treatment Facilities (WWTF)
- 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 upgrades to the Peirce Island WWTF and the Pease WWTF. 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.
A combined sewer overflow event has occurred at sites 10A and 10B to South Mill Pond and site 013 (Deer Street) to the Piscataqua River. See the City’s website for additional details. https://t.co/bmc9bw62We
A combined sewer overflow event has begun at Portsmouth Site 10B to South Mill Pond. See the City's web page ( https://t.co/bmc9bw62We ) for additional details.
A combined sewer overflow event has begun at Portsmouth Site 10A to South Mill Pond. See the City's web page ( https://t.co/bmc9bw62We ) for additional details.
A CSO began at the end of the day (near midnight) of January 25, 2020 at Portsmouth Site 10A to South Mill Pond. See https://t.co/bmc9bw62We for more information. #PortsmouthNH