Agendas & Meetings

View agendas for upcoming meetings and minutes for past meetings.


Find the answers to some of our most frequently asked questions.

Rates / Fees

View the current rates and fees for COMM Water services.


PFAS in drinking water is an important emerging issue nationwide.

Welcome To COMM Water Department

The Centerville-Osterville Water District was established in 1938. It became the Centerville-Osterville-Marstons Mills Water District in 1986.

The Water District provides water service to the residents of the COMM Fire District.  The Water District has been recognized for having some of the best water in the state.  The Water Department has three storage tanks with over 5.5 million gallons stored. It has 247.5 miles of underground pipe and over 1,940 fire hydrants.  There are 19 pumping stations.

News & Updates

For the comfort & safety of our customers please use our contact-less drop box (for checks only) outside of our building or mail payments:

COMM Water Department

PO Box 369

Osterville, MA 02655

Email any non-emergency questions:

Submit your requests online above under FORMS (online forms):  mark outs, final water readings, seasonal turn on and offs, record change, requests for information and service applications

Reminder:  Town’s Emergency Notification System

What is CodeRED and why is it important to me?  CodeRED is an emergency notification service by which town officials can notify Barnstable residents and businesses by telephone, cellular phone, text message, or electronic mail about time‐sensitive emergency situations or important community alerts.

Frequently asked questions can be reviewed  Be sure to take a moment to learn more about this important notification system.

Sign up at this link for The Barnstable Police Department’s emergency notification system:

or Code Red link is:

Either one can be used to sign up for notifications.

Flushing Program – Continue to follow us for future flushing updates coming March 2022.  We apologize again for any inconvenience this may have caused and appreciate your support in our efforts to supply clean, safe water for 2021 . Thank you!

August 16, 2021 PFAS Update

Healthy LawnSave Water

Annual Warrant Book 2021