Consumers: Information about your drinking water quality is available from your water system in its annual Consumer Confidence Report (CCR). A number of CCRs for California water systems are available on the US EPA's website.
Notification Levels: The Division of Drinking Water (DDW) uses these health-based advisory levels for certain chemicals without MCLs. Exceeding them prompts certain requirements and recommendations.
This website will be unavailable 7:00PM Friday, 10/19/2018, through 6:00PM Sunday for equipment relocation. Please note that all Water Board applications and data services are included in this maintenance. We apologize for the inconvenience.