Clean Water Week 2026
April 12 - 18, 2026
WELCOME TO THE CLEAN WATER WEEK EVENT PAGE -
Participate in the first open house at wastewater treatment facilities across the State of New Hampshire.
A state-wide open house at participating wastewater treatment facilities will take place during the week of April 12 - 18, 2026. State residents are welcomed and encouraged to visit a wastewater treatment facility during scheduled visiting hours hosted throughout the week. Interested participants should contact their desired location using the list of participating facilities.
What: Tour of your local wastewater treatment facility!
When: April 12 - 18, 2026
For additional information regarding specific Treatment Facility tour dates and time slots, please contact your desired facility from the list of participation facilities.
Where: Wastewater Treatment Facilities across New Hampshire! See a list of participating facilities.
About Clean Water Week
The State of New Hampshire is home to approximately 70 wastewater treatment facilities operating 24 hours a day, seven days a week to treat sewage and protect our rivers, lakes, and coastal waters from pollution. From Lake Winnipesaukee in the Lakes Region, to the Great Bay in the Seacoast, and west to the Connecticut River along our border, clean water is fundamental to New Hampshire’s environment, economy, and quality of life.
Wastewater treatment facilities, sewer collection systems, and the dedicated professionals who operate and maintain them provide an essential public service to our communities every day. Their work safeguards public health, and protects our environment.
Clean Water Week offers a unique opportunity to learn about and better understand the sewer systems and public services we rely on but rarely see. This event provides rare access to critical public infrastructure, giving community members a behind-the-scenes look at local wastewater treatment. Attendees can gain insight into the daily operations of treatment facilities, ongoing infrastructure improvements, and local efforts to maintain and upgrade these vital systems. Participating in Clean Water Week as either a municipality or community member effectively promotes broader public engagement in water protection and conservation efforts at both the local and statewide levels.
Facility Tours
From April 12 - 18, 2026, the New Hampshire Water Pollution Control Association (NHWPCA) and the New Hampshire Department of Environmental Services (NHDES) are promoting a state-wide open house at participating wastewater treatment facilities. Interested individuals should reach out to their desired facility from the list of participating facilities to find out more on scheduled tours and events.
Before you go:
* Individuals should contact their desired WWTF for tour information prior to arriving at the facility.
* Attendees should dress appropriately for visiting an industrial facility:
- Long Pants
- Long Sleeves
- Closed-toe shoes
