Water Treatment Plant Tours

By Fresh Pond Reservation

Find out where Cambridge's tap water comes from in this free tour of the Cambridge Water Dept.

The main process area of Cambridge's Water Treatment Plant
Monday, November 6 6pm – 7:30pm

.: Monday, April 3 6pm – 7:30pm; Monday, May 8 6pm – 7:30pm; Monday, June 5 6pm – 7:30pm; Monday, July 10 6pm – 7:30pm; Monday, August 7 6pm – 7:30pm; Monday, September 11 6pm – 7:30pm; and Monday, October 2 6pm – 7:30pm.

Ages: 5 to Adults.

Grades 2nd grade through 12th grade.

Request assistance


Tim Puopolo
Cambridge Water Department

No application or registration needed.



  • In-person only.

Cambridge Water Department

250 Fresh Pond Pkwy
Cambridge, MA 02138
United States

Cambridge Highlands, North Cambridge, Strawberry Hill, and West Cambridge

Parking passes for vehicles without Cambridge Resident Parking Permits available at the front desk for program participants

Additional information

Yes, every drop of Cambridge tap water at one point in time was part of Fresh Pond. Learn how the building on-site turns Fresh Pond into fresh drinking water.

You’ll have the chance to speak with water treatment staff, learn about the reservoirs by I-95, see the equipment in action and check out our water quality lab!

This program meets inside the main doors of the Cambridge Water Dept. building (facing the first parking lot). Open to all ages and the general public. Parking passes available.

Tour dates for 2023 tours of the Cambridge Water Dept.