An official website of the United States government
Here’s how you know
Official websites use .gov A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS A lock ( Lock A locked padlock ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Perchlorate Update
PFAS Information.
PFAS FAQ
Learn More
Please Update High Read Contact Information
Return to Cambridge Water
A public tour of the Walter J. Sullivan Water Treatment and Purification Facility, the headquarters of the Cambridge Water Department on the shore of the City's active drinking water supply: Fresh Pond Reservoir.
View Events Calendar