Yerba Buena Service Area
We’re Proud to Be Your Water Service Provider.
On December 9, 2025, California American Water completed the acquisition of the Yerba Buena Water Company. We provide safe, reliable water and wastewater service to approximately 750,000 people across California, operating more than three dozen water systems statewide, including our neighboring Ventura County district. We’re committed to delivering the same high standard of service and investing in the infrastructure and innovation that keep our communities thriving.
You’re in good hands.
Your service will be supported by our experienced California American Water operators. These professionals are certified in water treatment and distribution, bringing deep local knowledge and technical expertise to your community.
About your rates.
There will be no immediate changes to your current rates. California American Water has adopted the existing water rates from Yerba Buena Water Company. As a regulated utility, any future rate changes must be reviewed and approved by the California Public Utilities Commission (CPUC).
Billing changes.
Beginning in December 2025, you will receive your first monthly bill from California American Water, which will be prorated. This bill will reflect all payments previously received and processed by Yerba Buena Water Company.
All future payments should be made directly to California American Water. To help you get started, your welcome packet includes details about our convenient payment options.
Once you receive your new account number on your first bill, we encourage you to register for online bill pay through MyWater, our secure customer portal, at amwater.com/mywater. You can also find a payment location near you by using our helpful online tool: https://amwater.com/caaw/Customer-Service-Billing/Billing-Payment-Info/index
Expanded customer services.
As a California American Water customer, you now have access to a wide range of services, including:
- 24/7 emergency support at 888-237-1333
- Language translation services
- Online Account management and paperless billing via MyWater
- Water conservation tools and resources
Leak detection kits, low-flow fixtures, and other conservation items are available at our Ventura County District office located at 2439 West Hillcrest in Newbury Park, CA 91320.
A helping hand for customers in need.
Qualified customers will also have access to our Low-Income Assistance Program, which helps seniors on low fixed incomes and families facing financial hardships. This program will be available after California Public Utility Commission approval, estimated by 2027.
We’re Here to Answer Your Questions.
Our goal is to ensure a smooth transition from Bass Lake Water Company to California American Water. If you have any questions or concerns, please don’t hesitate to reach out to:
Brian Barreto, External Affairs Manager, brian.barreto@amwater.com
It’s A Privilege to Serve You
We’re honored to be your water service provider and look forward to serving you in the days ahead. For more information, please visit us at californiaamwater.com