Hi-Lo

My Water System Documents and Details

City : Derry , Water System : Hi-Lo

Water Restrictions

No Restrictions

Last Update: Wednesday, May 20, 2026

Water Rates

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Construction/Projects Update

Improvements will be made to the community water system at the Hi-Lo Water Treatment Station beginning September 8, 2026. As we work to improve your water system, you may see increased activity in the area, including vehicles and minor construction noise. All work shall take place within the footprint of the existing structure. Service interruptions are not anticipated, and work is estimated to be completed by March 31, 2027.

A contractor will be completing this work on behalf of Pennichuck. Work hours will be 7:00 a.m. to 4:00 p.m., Monday through Friday, though this schedule may vary depending on site conditions.

We sent a letter to notify customers of this work. If you did not receive a letter, please contact Customer Service to ensure we have your current mailing address. Thank you for your support as we work to improve your community water system. If there are any additional questions regarding this process, please contact Pennichuck Customer Service at 800-553-5191 or customer-service@pennichuck.com.