California is in a serious drought. Use only the water you need.

Water Quality

Water Quality Reports

West Basin takes seriously our responsibility to provide safe, high quality water to our customers. Our water quality is better than required by state and federal drinking water standards.  As a wholesale agency, West Basin does not conduct water quality tests on potable water but monitors Metropolitan Water District's testing and reporting. Click on the following link for MWD's water quality reports or visit

Since 1991, California water utilities have been providing information annually on water served to its consumers, according to state law. A 1996 federal law similar to California's also required water utilities across the country to provide information to their consumers on the water served. The reports describe the water quality, sources of water, and other information to inform consumers on their water supply. For more information, contact your water provider for details on the annual consumer water quality report.