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California Environmental Health Tracking Program

850 Marina Bay Pkwy, P-3
Richmond, CA 94804

(510) 620-3038
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Water Systems Geographic Reporting Tool

Welcome to the California Environmental Health Tracking Program's Drinking Water Systems Geographic Reporting Tool, also known as the Water Boundary Tool (WBT). The WBT facilitates the creation and collection of customer service area boundaries for public water systems in California.

Notification: The WBT is currently undergoing an upgrade. During this time, some features may not function completely. This may include registration, drawing features, and data downloads. Please contact us if you have any questions or need assistance during this time.

Explore water system boundaries using our interactive map viewer. View FAQs for data users to learn more about the data.

Access water system boundary files by using our data downloader and service endpoint. View FAQs for data users to learn more about the data.

Water systems and other qualified users can use the tool to input or edit water system boundaries. Please review the instructions and FAQs for tool users before getting started.

Learn More
View the FAQs to learn more about the Water Boundary Tool, including what the tool is used for and how this information can be used.

CEHTP is a collaboration between the Public Health Institute and the California Department of Public Health. CEHTP developed the WBT with initial funding from the CDC's National Environmental Health Tracking Program.