About Cross Connection and Water Pollution Control Program

The Cross Connection Program conducts water-use surveys to a variety of federal, state, city, and private facilities / businesses to determine if interconnections exist between industrial (non-potable) and potable water systems.

These potential hazards are evaluated and identified within the premises which may require the installation of a testable backflow prevention assembly. Per code, these backflow prevention assemblies are required to be tested on an annual basis by qualified Los Angeles County Certified Backflow Testers.

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Contact Us

Monday - Friday
8:00am - 5:00pm

Tel: (626) 430-5290
Fax: (626) 813-3025
Email: CCWPCP@ph.lacounty.gov

County of Los Angeles Public Health
Environmental Health
Cross Connections & Water Pollution Control Program
5050 Commerce Drive
Baldwin Park, CA 91706