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?

Residential Backflow Prevention Brochure 

 PDF File  - 4.13MB


 

Backflow Pool 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 commercial


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 & A BACKFLOW SERVICES, INC (805) 727-0336
aabackflowinc@gmail.com
A TO Z PLUMBING (805) 486-3896
jgrue1@verizon.net
A WATER-FLO SERVICE (805) 758-0055
awaterflosvc@gmail.com
ACCURATE BACKFLOW TESTING (805) 497-2415 / (805) 660-2205
accuratebackflow@sbcglobal.net
AMERICAN DISCOUNT BACKFLOW (805) 341-4436
americandiscountbackflow@yahoo.com
ANTHONY’S PLUMBING (805) 585-2211
anthonysbackflow@yahoo.com
AQUA-TECH SERVICES (805) 340-0374
md.aquatechservices@gmail.com
A-SAME DAY BACKFLOW TESTING CO. (805) 581-5825
samedaytesting@outlook.com
B.A.V.C.O BACKFLOW APPARATUS (800) 458-3492
service@bavco.com
BRUCE'S BACKFLOW (805) 797-5546
brucesneed@msn.com
C & M BACKFLOW/PLUMBING (805) 443-7451
cmbackflowplumbing@yahoo.com
CAMARILLO PLUMBING AND PAINT, INC (805) 482-8963
CamarilloPlumber@gmail.com
CROWDER BACKFLOW SERVICES (805) 639-0123
crowderbackflow@gmail.com
D R & V J LAGESSE INC (805) 525-5798
andy_plumbing@yahoo.com
DAVID GONZALES BACKFLOW SERVICES (805) 201-8704
david@dgbackflow.com
E. KUCHAR BACKFLOW CO. (805) 981-8820
(805) 236-2272
ECONOMY PLUMBING (805) 648-2525
matteconomy@sbcglobal.net
FLOW & SAFETY SERVICES (714) 475-8040
flowsafetyservices@hotmail.com
INTEGRATED FIRE & SAFETY (805) 648-5906
integff@pacbell.net
JOHN ROWLAND PLUMBING (805) 644-9833
(805) 646-1112
shirley@johnrowlandplumbing.com
MIKE KIMBLE PLUMBING (805) 644-4180
info@kimbleplumbing.com
NOYES PLUMBING CO. INC (805) 648-6933
noyesplbgco@sbcglobal.net
NUNN BETTER PLUMBING (805) 388-1234
OXNARD BACKFLOW (805) 639-0080
OXNARD PLUMBING (805) 486-7374
oxnardplumbingco@yahoo.com
PACIFIC BACKFLOW (805) 443-1714
fox4golf@yahoo.com
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
info@serviceprofire.com
SIERRA PACIFIC LANDSCAPE (805) 630-1112
(805) 290-8534
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 File (PDF - 43.3 KB)
Backflow Prevention Device Form PDF File (PDF - 7 KB)

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For further information:
Water Resources Division

(805) 385-8136

Last Updated: Sep 22 2014