As the coronavirus (COVID-19) updates continue, Pennichuck will continue to provide vital water services to you and your family. We have taken steps to protect our staff, their families, and our community to ensure the continued delivery of the critical services we provide.
We have been monitoring the COVID-19 situation closely and we are taking measures to keep our customers and our staff and their families safe and healthy. We are following recommendations of health authorities including both the state and federal Centers for Disease Control and Prevention (CDC).
As recommended by the CDC, protections we have implemented include increasing sanitation and disinfection of workspaces, cancelling large gatherings, minimizing non-essential meetings, and promoting personal hygiene practices.  We are continuing to monitor any employee illness and promote work from home options for all employees whose job responsibilities allows them to do so. We still have all essential staff on duty as needed.
As always, we have representatives available by calling 800-553-5191 Monday through Thursday 7:30am to 7:00pm and Friday 7:30am to 5:00pm, with emergency services available 24 hours a day, 7 days a week.

Please take note of the following important changes to our normal daily operations:

We want to assure you that your water continues to be monitored, treated and tested in accordance with regulations established by the EPA and NH Department of Environmental Services.
Pennichuck will continue to monitor developments on COVID-19 and is prepared to take any further actions as needed. Please read our letter from our CEO regarding COVID-19. Please visit and fill out our Customer Contact Information form, as expressed in the letter.

Cross Connection Program

What is a cross connection?
A cross connection occurs when a water supply line is connected to a non-potable (unfit to drink) water source. If these cross-connections are not protected, it could potentially lead to a dangerous situation. By installing a backflow prevention device, these dangers are minimized.

What is a backflow?
A backflow can occur when the hydraulic conditions within a system change from their normal conditions, and cause water to flow in a backwards direction. A backflow of water in the system can be harmful because it could siphon any substance that it is in contact with into the water distribution system causing a cross connection.

What is a Backflow Prevention Device?
A Backflow Prevention Device is a mechanical assembly designed to counter any backflow that may occur. There are several different types of devices; the type required in any given situation depends on the type of backflow that may exist and how hazardous it is.

New Hampshire Department of Environmental Services requires that public water utilities take the appropriate measures to prevent the reverse flow of water into their distribution system.

These devices have been tested by the Foundation for Cross-Connection Control and Hydraulic Research at the University of Southern California. Devices that are granted approval by the foundation are extremely dependable. For further information on backflow and Backflow Prevention Devices, and a list of approved devices, please visit the University of Southern California’s website at

Pennichuck has an extensive Cross Connection Program for your reference. Please contact our Engineering Department at (800) 553-5191 extension 2321 to request a copy of the program.