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Sanitary Sewer Collection

The sanitary sewer collection system is comprised of 168 miles of pipe in various sizes with approximately 4,000 sewer manholes and 9,400 service connections. Wastewater in the sanitary sewer system flows to either the Concord Wastewater Treatment Plant or the Penacook Wastewater Treatment Plant. The Highway and Utilities Division of Concord General Services has a sewer crew that maintains the sanitary sewer collection system within the City of Concord.

Sewer Collection Manhole Cover

Responsibility


Our sewer crew maintains the sewer lateral pipe within the City Right-of-Way, which is typically from the middle of the street to the back of the sidewalk, or 8’ to 10’ from the edge of the pavement if there is no sidewalk. The property owner is responsible for maintenance of the sewer service after this point up to the building or house. 

The sewer lateral is the pipe that transports wastewater from a private property (building/house) to the sewer main in the street. The pipe can be made of clay, bermaco, asbestos cement, cast iron, or plastic and can be 4-6" in diameter. Roots, grease, sagging, fatigue, foreign objects, freezing, and damage are all issues that can cause a problem with a sewer lateral. 


Maintenance

Highway and Utilities' sewer crew does periodic inspection of the sewer collection system. They jet rod/vacuum to help keep the system clean, video the system for further inspection, repair damages, reset manhole frames, and silence noisy covers on the sewer mains. Sewer lateral work includes repairs, video inspection, discontinued service, and dye tests. Other miscellaneous work includes investigating sink holes and foul odors. Odor complaint investigation can determine problems such as a leaking sewer pipe, an old dried up sink or toilet trap from lack of use, mildew, or a dead animal. 

Do not pour illegal substances down a catch basin or drains. Call New Hampshire Department of Environmental Services (
NHDES), 603-271-3503,if you witness illegal substances (motor oil, paint, gasoline, etc.) being dumped or spilling down a catch basin.


Construction

A homeowner or contractor can hire the Sewer Crew to install the sewer lateral in the Right-of-Way for a new house or existing house, but a contractor will have to install the pipe from the Right-of-Way into the house or building. During new construction, the sewer crew serves as a contractor to the person requesting the construction services. These contracted services do require a charge. A full deposit of the estimate is required before initiating new construction. The customer will pay or be refunded the balance after work completion. 



Contact Us
General Services
Email 

311 North State Street 
Concord, NH 03301

Operation Hours:
6:30 a.m. - 3:00 p.m.

Administration Hours:
Monday - Friday
8:00 a.m. - 5:00 p.m.

Phone: 603-228-2737
Fax:     603-224-6729
Calendar
Mon, Apr. 17 - Fri, May 26

Mon, Apr. 24 - Sat, Jun. 3

Sun, May 21 - Sat, May 27

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Riverfront Park Dock Installation Postponed
High water levels at Riverfront Park have temporarily postponed installation of the docks. Normally, docks are installed prior to Memorial Day, but staff will monitor water levels to install docks once levels have normalized.
National Public Works Week
Kick-off Public Works Week today with a Twitter Party 2pm-3pm at www.twitter.com/ConcordNHGS. Tweet along using #NPWW. Join the Public Works Celebration on May 23rd from 11:00am to 12:30pm at Memorial Field. Read on for more information... Read on...
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