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.

Watershed Studies

The Pennichuck Corporation has been working since 1998 on a multitude of projects, the majority of which have consisted of watershed studies. These studies, focusing on both the watershed as a whole and specific components such as pollution source identification and sediment tracking, have been instrumental in Pennichuck’s decision-making process regarding future watershed management and water quality improvements. The studies completed to date are archived in the links below.