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.

Sediment Analysis

During 1999-2000, Comprehensive Environmental Inc. (CEI) completed a sediment impact study for the Pennichuck chain pond system. An evaluation was conducted of the quantity and quality of sediments in the chain ponds to determine the loss of capacity and how these sediments were contributing to water quality degradation. Long-term measurement of sediment accumulation rates was recommended.

During 2010-2011, CEI completed an update of this study to determine sediment accumulation rates in Holts Pond, Bowers Pond, and Harris Pond using data from the 2000 study for comparison. The results indicate that sediment is accumulating in the water supply pond system which over time will reduce supply capacity. Specific locations of sediment accumulation, and options to evaluate long-term sediment accumulation rates were identified.

In 2013, CEI completed a sediment investigation study to estimate sediment loadings over time using a combination of desktop calculations and the collection and analysis of sediment cores collected from bottom sediments at select locations throughout the water supply ponds. Desktop calculations were used to estimate sediment loads from the surrounding watershed and their potential sources, including roadway sanding, surrounding land uses, channel deposition, and algal die-off. Laboratory gradation and Gamma Spectroscopy analysis for radionuclides was performed on select cores to help define the approximate dates and rates of accumulation for the various sediment layers. Permanent sediment sampling gages were installed at the deep sediment core locations for long-term monitoring as provided in recommendations.

2000 Sediment Study Report (2.9 MB) (pdf)
2010-2011 Sediment Impact Study (2.9 MB) (pdf)
2013 Sediment Impact Study (8.2 MB) (pdf)