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Cross Connection Program / Backflow Testing
Cross-Connections between water supplies and non-potable sources of contamination represent one of the most significant threats to health in the water supply industry.

Backflow is the reversal of water from its intended direction due to a pressure differential. It can occur anywhere that has a potential cross-connection in a water system, including: dishwashers, garbage disposals, toilets, shower heads, faucets, pools, lawn irrigation systems, fountains, and hoses. 

Backflow Device

The Cross Connection Program is designed to maintain the standards of water potability of the City’s distribution system by establishing rules and procedures to control potential cross-connection and to prevent the contamination of public drinking water from other liquids, materials, and sources other than its intended source by installing approved backflow devices

Parallel Backflow

Installing parallel backflow devices can allow for required tests to be performed without interrupting water service. 

For more Information: Cross Connection Control Program Brochure

Request / Schedule Backflow Test

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Utility Billing

311 North State Street
Concord, NH 03301

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

Phone: 603-225-8693
Fax:     603-228-2749

Fri, Sep. 25 - Fri, Oct. 23

Thu, Nov. 26 - Sat, Nov. 28

Fri, Dec. 25 - Sat, Dec. 26

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Enter Concord General Services' E-Z Pay for WaterSense contest by enrolling in Utility Billing's E-Z Pay Payment Plan by 10/23 for a chance to win a WaterSense labeled showerhead to save water, energy, and possibly even money on your utility bill! Read on...
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