The Water Boundary Tool is currently undergoing maintenance. At this time, the ability to view, create, and edit water system boundaries is not available. Files can still be downloaded. Please contact us if you have any questions. Thank you for your patience.
Welcome to the California Environmental Health Tracking Program (CEHTP) Drinking Water Systems Geographic Reporting Tool, also known as the Water Boundary Tool. This tool is specifically for use by California public water systems, local primacy agencies, and the CDPH Drinking Water Program.
- What's new
- About the tool
- Purpose of the tool
- Partnerships and support
- For assistance and information
Read the welcome letter from the Division of Drinking Water and Environmental Management.
- 06/18/2013: Learn about how the public data set from the Water Boundary Tool has been used to advance public health in our Spring 2013 Newsletter. The tool was first announced in our Spring 2012 Newsletter.
- 08/10/2012: We have created a new discussion forum for the Water Boundary Tool. It's called the CEHTP Water Boundary Tool Group and can be viewed at https://groups.google.com/d/forum/cehtp-water-boundary-tool-group. Please use it to submit questions or comments about the tool and to learn from others.
The Water Systems Geographic Reporting Tool allows personnel from water systems, state primacy field operations districts, local primacy agencies (LPAs), other state agencies, and other qualified individuals to input and edit customer service area boundaries for drinking water systems throughout California.
The tool also allows users to:
- Create and edit service area boundaries
- Track boundaries as they change over time
- Collaborate with other users to improve accuracy of boundaries
- View boundaries on Google Maps
- Export digital files of the customer service areas
To begin using the tool, users must register for an account.
CEHTP, along with our partners, created this tool with the following goals:
- Produce a high resolution, digital map of drinking water system customer service areas for the entire state of California
- Assist water systems in digitizing their customer service area boundaries and identifying their neighboring systems
- Create a geographic information system (GIS) layer that can be used for:
- Emergency preparedness
- Public health prevention and response
- Research to better understand the relationship between drinking water, health, and the environment
The California Environmental Health Tracking Program (CEHTP) initiated this effort; developed, deployed, and maintains the tool; and hosts the website. Our partners have been essential in this effort, offering key information and support.
The CDPH Division of Drinking Water and Environmental Management provided information about the public water systems in the state, which was essential to the tool's development; facilitates relationship-building with water systems and other key stakeholders; and provides guidance and support in the tool's implementation.
The UC Davis Information Center for the Environment (ICE) conducts outreach to water systems, pre-populates the tool with boundaries obtained from various sources, and provides software development support and guidance.
- FAQs - View our Frequently Asked Questions to learn more about the tool
- Instructions and Tutorials - View step-by-step instructions for using the tool
- Discussion Group - Ask questions and learn about previous issues