Water backflow prevention in San Diego

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backflow-prevention san diego

What is a backflow preventer?

It’s a device that allows water to flow in one direction but never in the opposite direction. Its task is to prevent drinking water from being contaminated due to backflow.

This device typically extends above ground, although many were installed in underground vaults. The preferred method of installation is outside of the building and above the ground. It’s much safer for installation and maintenance. 

Backflow testing

Water backflow prevention testing is a procedure that checks that dirty water does not mix with clean drinking water in the waterline. This check is carried out during a routine plumbing inspection or upon request. We recommend you to get backflow testing, if you notice that the water has become dirty, sediment starts to form on the bottom of the glasses, or the water has a smell.

How does a backflow preventer work?

Water should only ever flow in one direction: into your building or your home. But sometimes, due to pressure changes in the pipes, that water can actually flow backward and seep back into the main water supply line. 

During normal operation of the backflow preventer, the pressure between the two check valves – referred to as the zone of reduced pressure – is maintained at a lower pressure than the supply pressure. If either check valve should leak, the relief valve is designed to open and discharge water to the outside, ensuring backflow never occurs.

Remember, that backflow preventers need regular testing in order to keep your drinking water clean.

backflow preventer san diego

Why do you need a water backflow preventer?

There are many reasons to consider having a residential backflow preventer installed. Here are the main ones:

  1. Keeps pollutants — germs, bacteria, organic waste, and harmful chemicals — out of the water supply, which in turn makes the water look and taste clean
  2. Protects your water and sewer system from expensive repairs resulting from the damage of pipework and entry of foreign materials
  3. Compliance with the legal requirements in areas where the installation of backflow preventers is mandatory

A backflow preventer can eliminate the contaminants from your drinking water, keeping you and your family safe and healthy.

Backflow preventer installation in San Diego

The Uniform Plumbing Code requires all properties to have an adequate backflow preventer in order to eliminate accidental water supply contamination. Municipalities throughout California have been aggressively enforcing this new requirement. So, keep a high quality of drinking water – install a backflow preventer with Almco Plumbing!

backflow preventor almco

What are the types of backflow preventers?

1. Air Gap 

2. Hose Bib Vacuum Breaker 

3. Atmospheric Vacuum Breaker 

4. Pressure Vacuum Breaker 

5. Double Check Valve 

6. Reduced Pressure Zone Device 

Our plumber will advise you on the best type for your home and what is required by a local government. 

Leave us a request for a backflow preventer installation

Give us a call! (858) 209-7214
We are ready whenever you are. If you want to install or test a backflow preventer, feel free to call our experts today.

Our professional, certified and licensed plumbers are always on-standby to fix your problem. Plus, they can show up for emergencies, so you’ll never have to handle them yourself!

Contact us to find out more about our offers and schedules in San Diego, CA
Or just fill out the form below.


    • We call the cost of backflow prevention only after estimating the amount of work. We do our best to be as honest and accurate as possible. You can count on our backflow prevention prices to be affordable and consistent with the quality of service.

    • It is very easy to book a backflow prevention service with us. You can go to the bottom of the page and fill out a short form. Or you can go to the Booking page and leave your contacts there. Choose a convenient day for you and be sure – we will arrive at the specified time.

    • The plumbers from Almco have more than 10 years of experience in backflow preventer installation. Before the procedure, we carry out a thorough plumbing inspection in order to accurately assess the scope of work and select a method that will preserve the pipes. Our prices are fair, and our specialists work carefully. We are always polite and punctual.

    • Yes, if you live in San Diego. You can book backflow preventer installation if you live in Clairemont, Miramar, Point Loma, Santa Fe, Kensington, Ocean Beach, and other areas of San Diego. A complete list of places where we work can be found on the Areas Served page.

    • Yes, you do. According to Uniform Plumbing Code, all properties are required to have a backflow preventer in order to eliminate accidental water supply contamination.  You can benefit from a backflow preventer because it keeps water clean and fresh. A backflow preventer also protects your sewer system from expensive repairs.

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