Thursday, July 16, 2026: Pennichuck has repaired the water main break on Sherman St. in Nashua. Water service has been restored in the area. Technicians are flushing hydrants to dispel naturally occurring sediment and air from the main. Residents who experience discolored water afterwards on Friday, July 17, 2026, should run their cold water for 10 minutes. If the issue persists, please call customer service at 800-553-5191. Thank you for your patience as we work to protect the quality of your water.

Pond Sediment Studies

Because sedimentation levels can affect the available storage volume in a water supply system, Pennichuck Water Works has conducted multiple analyses into the levels and patterns of sediment accumulation throughout its backup water supply, as well as the feasibility of removing this accumulation. The studies completed to date are archived below.