Cross Connection and Backflow Protection

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Protecting Our Potable Water Distribution System

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How Does LVMWD manage cross connections and prevent backflow?

In order to maintain the safety and quality of the potable water we serve to our valued customers, LVMWD has created a comprehensive Cross Connection and Backflow Prevention Program.  This program begins by 1.) identifying properties that have a cross connection 2.) ensuring a proper backflow prevention assembly is installed and 3.) testing these assemblies for proper operation on an annual basis.  The initial equipment inspection and annual testing is performed by certified LVMWD personnel.

What is a cross connection?

A cross connection occurs when LVMWD potable water lines connect to various fixtures or equipment that create a path for contaminated water to enter into the potable water distribution system. 

What is backflow?

Backflow means the undesirable reversal of flow of a liquid, gas, or suspended solid into the potable water distribution system. 

LA County Code:

For the protection of your drinking water supply the backflow prevention assembly shall be tested at least annually pursuant to the requirements outlined in the California Code of Regulations, Title 17 § 7605, Los Angeles County Code, Title 11 § 11.38.480, California Health & Safety Code, section 116800 and California Plumbing Code, section 603.2: