Backflow and Cross Connections Protection
The City of Oxnard is committed to safe drinking water. As a City of Oxnard resident, you expect your drinking water to be safe. The City of Oxnard Water Resources Division is committed to providing you the healthiest, highest quality water, but we need your help to prevent contamination from occurring at your home. Many ordinary household activities, under the wrong circumstances, can lead to water contamination.
For example, a garden hose submerged in a tub of water to wash your pet or your car, or connected to a garden sprayer containing fertilizer or insecticides, can lead to contamination of the water in your household pipes or in the City water system. Taking simple precautions with your home water use can prevent drinking water contamination. Take a look around your home and yard. Can you identify other potential sources of drinking water contamination?
What is a cross connection?
A cross connection is any connection between piping that carries drinking water (or potable water) and the piping or fixtures that carry water not suitable for drinking (or non-potable water), or other substances that are not safe to drink, such as cleaning products, yard and garden chemicals, automotive products, water from irrigation systems, fire sprinkler systems, or private wells.
What is backflow?
Drinking water normally flows in one direction, from the meter to the house. Under certain circumstances, it can flow in the opposite direction -- this is called “backflow.” A backflow incident can happen at any time. All that is needed is a water pressure drop in the public water system main line, most commonly caused by fire fighting, hydrant flushing, flow testing, a water main break, or extreme high usage on the water system.
Why is backflow protection necessary?
If such a pressure drop occurs, any connection to a non-potable water source could be siphoned back into the customer’s drinking water piping, polluting the water within the home, and even into the water mains in the street, polluting the public water system. The only way to prevent such incidents from occurring and to maintain safe drinking water is to use backflow prevention devices and to make sure that they are correctly installed and adequately maintained. Our drinking water is among the safest in the world, but it requires the efforts from all of us to keep it that way.
What is a backflow assembly?
Backflow assemblies are devices placed on cross connections to prevent water from backflowing into the public water system. The most common type of backflow assembly is a double check valve assembly, which consists of two independent check valves, two resilient seated shut off valves and test cocks. To ensure they work correctly, all backflow assemblies must be tested annually, with the exception of atmospheric vacuum breakers.
How often do backflow assemblies need to be tested?
Backflow assemblies must be tested at the time of installation, annually (once a year) after installation, after repairs and after relocating. When the City of Oxnard Water Resources customers have their backflow assemblies tested, the certified tester must submit a test report to the City. (Testers see below for a blank Test Form.)
Cross-Connection Control Certified Backflow Testers
Businesses licensed in the City of Oxnard and Certified by Ventura County Environmental Health:
|COMPANY NAME||PHONE/EMAIL ADDRESS|
|A TO Z PLUMBING||(805) 486-3896
|A WATER-FLO SERVICE||(805) 758-0055
|ACCURATE BACKFLOW TESTING||(805) 497-2415
|AMERICAN DISCOUNT BACKFLOW||(805) 341-4436
|ANTHONY'S PLUMBING||(805) 585-2211
|APPLIED BACKFLOW TECHNOLOGIES, INC.||(805) 647-5603
|AQUA-TECH SERVICES||(805) 340-0374
|A-SAME DAY BACKFLOW TESTING CO.||(805) 581-5825
|B.A.V.C.O BACKFLOW APPARATUS||(800) 458-3492
|BRUCE'S BACKFLOW||(805) 797-5546|
|C & M BACKFLOW/PLUMBING||(805) 443-7451|
|C.O.R PLUMBING||(805) 947-8391
|CROWDER BACKFLOW SERVICES||(805) 639-0123
|D R & V J LAGESSE INC||(805) 525-5798
|DAVID GONZALES BACKFLOW SERVICES||(805) 201-8704
|E. KUCHAR BACKFLOW CO.||(805) 981-8820
|ECONOMY PLUMBING||(805) 648-2525
|FLOW & SAFETY SERVICES||(714) 475-8040
|INTERGRATED FIRE & SAFETY||(805) 648-5906
|JOHN ROWLAND PLUMBING||(805) 644-9833
|MIKE KIMBLE PLUMBING||(805) 644-4180
|NOYES PLUMBING CO. INC||(805) 648-6933
|NUNN BETTER PLUMBING||(805) 388-1234|
|OXNARD BACKFLOW CO.||(805) 639-0080|
|OXNARD PLUMBING||(805) 486-7374
|PACIFIC BACKFLOW||(805) 443-1714
|PACIFIC LANDSCAPE SERVICES||(805) 484-0085|
|ROOTER 911 & TRENCHLESS SPECIALIST||(805) 794-4745|
|SCOTT ARNOLD BACKFLOW||(805) 796-1304|
|SERVICE-PRO FIRE PROTECTION, INC||(805) 487-1477
|SIERRA PACIFIC LANDSCAPE||(805) 630-1112
|VARGAS BACKFLOW SERVICES||(805) 758-5557|
NOTE: THIS LIST IS PROVIDED FOR INFORMATION ONLY. NO ENDORSEMENT IS INTENDED. IF REPAIRS TO BACKFLOW PREVENTION DEVICES ARE NECESSARY, THE SERVICES OF A LICENSED CONTRACTOR MAY BE REQUIRED.
|Certified Backflow Tester List||(PDF - 67 KB)|
|Backflow Prevention Device Form||(PDF - 7 KB)|
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