A backflow prevention device is necessary to prevent contaminated or polluted water or substances from entering the potable water system. 


Backflow prevention assemblies must be tested and certified annually.  Mechanical backflow devices (such as reduced pressure zone assemblies) contain seals, springs, and other moving parts that are subject to wear and fouling.  A yearly inspection by a licensed backflow assembly tester will verify the device is working properly and helps protect public health.


Certified Backflow Assembly Testers   (PDF Download)


Bush’s Backflow
John Bush
724 Olive Lake Blvd.
Blythe, CA. 92225
Cell - 760-574-9601


D&R Plumbing, Inc.
Mike Tommaney
PO Box 385
Chino Hills, CA. 91709
Phone - 909-627-2697
Fax – 909-591-1243
Email: mike@d-r-plumbing.com


Randy Hagan

40365 Paseo Del Cielo

Temecula, CA 92591

Phone 951-699-4147

Email: haganville1@verizon.net


Cibola Mutual Water Company

Phone:  (928) 857-3506

rr 2 box 77 5948 levee rd cibola AZ 85328 US

Backflow Prevention