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Cross Connection


California American Water is responsible for backflow prevention for our customers in Placer and Yolo County. Customers in Sacramento should contact the Sacramento County Environmental Management Department at 916-875-8484.
For more information contact: Terry Coleman (916) 869-6094.

Certified Backflow Testers for Sacramento



Please contact our Larkfield Office at 707-542-8329 or email

Certified Backflow Testers for Larkfield


San Diego

Please contact Robert Becerra at or 619-446-5703


Please contact Bill Weiss at or 805-498-1266 ex. 2804

Los Angeles

Please contact Geoff Williamson, Operations Specialist: or 626-614-2531


Please contact Nina Miller, Water Quality and Environmental Compliance Manager: or 831-646-3269