Backflow Testing, AWWA Certified Backflow Prevention Testers
 Plumbing Contractors -
Backflow prevention Devices
Napa Valley, Napa, County, San Francisco North Bay, Ca. USA

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A backflow prevention device is used to protect water supplies from contamination or pollution. Many types of backflow prevention devices also have test cocks so that they can be tested or examined to ensure that they are functioning properly.

In the United States, the Environmental Protection Agency (EPA) holds local water suppliers responsible for maintaining a certain amount of purity in potable water systems. Many states and/or local municipalities require annual testing of backflow prevention assemblies. A check valve is a common form of backflow prevention.

Backflow prevention protects the potable water system from minor, moderate, and severe hazards. There are over 10,000 reported cases of backflow contamination each year. Some cases can be fatal. Backflow devices are required by law where needed and must be installed in accordance with plumbing or building codes. A backflow assembly has test cocks and shut-off valves and must be tested each year, if relocated or repaired, and when installed.

The simplest, and most effective way to provide backflow prevention is to provide an air gap. An air gap is simply a space between any device that opens to a plumbing system (like a valve or faucet) and any place where water can collect or pool.


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This Symbol:  **   -- Indicates AWWA Certified Backflow Prevention Testers listed by Napa City for 2017.
(Napa's list is not comprehesnive of all certified testers and is provided for convenience only.  The Cty of Napa does not endorse the listed entities nor guarantiee the performance of the company executing the work.)

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Tom Hill's Backflow Service, (Cross Connection Specialist)
707 257-8840


** AAA Backflow Prevention Services,  Sean Hean  877-226-3569

Aaron Plumbing, Robert Amos, 707-255-1447

All Valley Backflow Services, Steven Espinoza,  707-927-3648

ACM Plumbing Service Corp 707 446-1607

**Beasley Plumbing, Dennis Beasley  1-800-975-0487

Bay Area Backflow, Certified Testing
707 226-9869 707 337-5427 cell

Benicia Plumbing, Mike Baber, 707-745-2930

**Brunson Plumbing, Stephen Demille
978 Kaiser Rd, Napa, CA 94558    707 224-3355

**Budget Backflow Testing & Repairs, Larry Van Ness  707 334-5328

** Cagwin & Dorward, Paul Schultz (415) 892-7710

** Checkrite Backflow, Patrick Rattigan 707-575-5296

D & D Plumbing Jack Wilcox  707-451-8911

Independent Testing Service, Kevin Tedrick, 707-636-4487

Inspection Services & Fire Protection, Eric Noethig, 707-523-0404

Janal Plumbing Incorporated
68 Coombs St # G1, Napa, CA 94559-3943 707 252-0295

**John's Backflow Tec & Service, John Barber, 707-205-9397

**Ken Johns Plumbing
1041 Robinson Ln, Napa, CA 94558 707 252-3582

M & O Backflow Testers, Ole Olson, Eric Olson, 707 648-1920

**McLean & Williams, Inc., Gonzalo Salinas
878 El Centro Ave, Napa, CA 94558 707 255-6450

Mike Morris,  707-974-8042

** Napa Valley Backflow Testing & Repairs, Jay Pettit, 707-224-7497

Oakville Pump Service, Mike Marcucci , 707 944-2471

**Perry's Plumbing,  Perry Sylvester,  707-252-2449

Ray Binner Backflows  530 263-3724

Robertson's Plumbing, Mike Robertson, 707-745-4125

**Roto Rooter, Jerry Bristol   707 224-2433

Tavenner/Northwood Backflow Service  800 750-4547

**Tom Hill's Backflow Service, (Cross Connection Specialist)
707 257-8840

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