Backflow Preventers work just as their name implies; they prevent backflow. When water flows from a source, it typically has chemicals added to ensure that the water is clean and free from bacteria or other hazardous material. However, when water leaves a purified source, and flows back into its original direction, it will become polluted and contaminated. Backflow Preventers are critical in preventing this process. The Backflow Preventer is a device that will prevent water from flowing back to its main source.

There are two main causes of water backflow. These are backpressure and backsiphonage. Backpressure is a result of pressure building up due to an increase of substances in the system. This hinders the water's ability to circulate properly and causes the water to flow backwards.

Backsiphonage is caused when water pressure suddenly drops, causing the water to flow the other way. The result is a siphoning, or suctioning that draws contaminants into the water. This may happen if there has been an increased demand on the water supply. Prevention and maintenance of your Backflow Preventers are the best way to protect your water system. It should also be noted that only licensed professionals plumbers should install Backflow Preventers, as both federal and state law regulates these. When looking for a local plumber to install, repair or maintain your Backflow Preventer, you should ask if they are certified in backflow prevention. However, it is the property owner's responsibility to check and test their Backflow Preventers to ensure that they are working correctly.

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