This Customer Bill Calculator is an online service made available by California American Water for customer convenience and is intended for estimation purposes ONLY. The calculations are not intended to be relied upon and should not be deemed to be a replacement for an actual utility bill. This calculator only applies to single-family residences.

All examples are hypothetical and are for illustrative purposes, as rates change frequently and taxes vary based on city and county. In addition, Wastewater service is not included. As a result, your actual bill may vary from the calculator.

Please contact California American Water should you have any questions regarding this calculator or your utility bill at 888-237-1333

To determine where to find your meter size and curent month water usage, please see a sample bill below.