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What Is Back Flow Prevention?

The moment water enters your house from the water supply line, it should flow only in one direction, proceeding through your home and then back out as wastewater. However, sometimes, because of pressure changes within the pipes, water can flow backwards and run back towards the water supply line.

Backflow can happen when, for example, the main water line is broken or when a fire hydrant is used. Because pressure is lost during these activities, water is no longer pushed into your home, and instead flows back to the city water lines.

When this occurs, backflow can actually contaminate the public drinking supply with fertilizers, pesticides, human waste, chlorine (from pools or spas), soap from dishwashers, sinks, showers, and much more. And this is where backflow prevention becomes crucial.


A backflow preventer is a machine that can be installed in your water pipes that allows water to flow only in one direction and never in the opposite. Its job is to prevent the contamination of drinking water due to backflow.

Here at Spartan Plumbing, we highly recommend that our customers in Tucson, Arizona consider backflow prevention in their homes and businesses. Without this protection, unclean and unsafe water can contaminate your water supply line, which puts the health of you and your family at risk.

There are other things you need to know about Back Flow Prevention.

How To Choose A Backflow Prevention Device

There are different types of backflow preventers available in the market as of today. Check with your local water provider, your local government, and whoever issues permits to see if the device you desire to use is authentic, effective, and legal. There are regulations that vary depending on which location you are in. Backflow prevention devices are expensive, and you don’t want to waste your hard-earned money.


Backflow preventer prices depend on what kind of machine is used and what current situation you are in. There are 4 types of devices commonly used around the country, and here is a list of the most expensive to the least expensive:

  1. Reduced Pressure Type Back Flow Preventer (RP)
  2. Double Check Type Back Flow Preventer (DC)
  3. Pressure Vacuum Breaker (PVB)
  4. Anti-Siphon Valve (ASV)

Why Should I Install A Backflow Prevention Device?

Backflow preventers help keep your water drinkable and clean and prevent the addition of pollutants that can contaminate your water supply line. Because, if backflow happens, wastewater can run in the opposite direction and expose you and your family to severe health concerns.

Other Preventive Home Tips for Backflow Issues

These are things homeowners can do to prevent backflow issues from happening:

  • Check your garden hose if it has some sort of backflow preventive setting.
  • Do not submerge your garden hoses in puddles they create, which may contaminate the hose.
  • Make sure that there are air gaps on plumbed appliances like water softeners, etc.
  • Change filters often. Filters can grow bacteria and molds that contaminate drinking water as they decompose over time with use.

Your safe, drinkable water can backflow when fire sprinkler systems are used for emergencies, in commercial boiler systems, and when used for underground lawn irrigation. You don’t want this unused water to go back to your home for drinking purposes.

Although getting the opinions of neighbors and friends can be very helpful, it is better to listen to what the professionals have to say. That way you can feel comfortable choosing an option that fits your budget. The best option for you is one that works and is affordable at the same time.

At the end of the day, ensuring your home never experiences backflow is the most important thing. This is why it is very important for you to have had a functional backflow preventer for your home or business. Spartan Plumbing is always ready to serve our customers by installing a new backflow prevention device. We’re ready to help and we’re just a call away.