Data + Tools
CWC Drinking Water Tool
Shows what’s in your water and highlights potential drought impacts to your water supply.
Guide to Community Drinking Water Advocacy
Learn about how to advocate for your drinking water as a community member or water provider.
CalEnviroScreen 4.0
Provides indicators of environmental health, including water quality
Data on failing and at-risk water systems in California
California Drinking Water Systems Data
List of CA drinking water systems out of compliance