A cross connection is a point in the water distribution system where a safe water supply connects to another water supply of unknown quality. All public water systems in California are required by Federal and State regulations to implement and enforce an active cross connection control program to protect the public water supply they operate. The program should either eliminate all cross-connections or require the installation and maintenance of an approved backflow prevention assembly at the water service connection whenever a potential hazard is determined to exist in the consumer’s system.

The consumer has the responsibility of preventing pollutants and contaminants from entering his/her potable water system(s) or the public water system.  The consumer’s responsibility starts at the point of delivery from the public water system (the meter) and includes all of his/her water system.  The consumer, at his/her own expense, shall install, operate, test, and maintain approved backflow prevention assemblies as directed by Park Water.

Park Water has an active cross-connection control program with approximately 462 backflow prevention devices tested annually.   Most of the sites are for irrigation uses such as golf courses, nurseries, street medians, parks and schools.  Some of the other sites include domestic fire service systems, health care facilities, manufacturing facilities and recycled water users.  For a list of certified backflow testers in your area, see the Los Angeles County Health Department’s list of approved backflow testers on their web page below. Los Angeles County Only, Employers of certified backflow testers;

http://lapublichealth.org/eh/docs/ehcrossemplist.pdf. Current certified backflow testers; http://lapublichealth.org/eh/docs/ehcrosstesterlist.pdf

Field Test and Maintenance Report

A certified tester should perform the field test and complete the Field Test and Maintenance Report and return it to Park Water Company.