Why You Need Backflow Prevention Maintenance

You may or may not know that your home is equipped with a backflow prevention device. Nevertheless, it likely is. Backflow is a common problem that can cause a huge headache for homeowners, which is why pretty much all new homes are constructed with a backflow prevention device installed in their sewer line. These are not systems that can be ignored, though, you’re going to need to have your backflow prevention device checked at least once a year if you want it to continue working properly. Read on for more information.


So why is backflow such a big deal, anyway? Backflow is the result of a sudden change in the pressure balance between your plumbing and sewer system. Either your plumbing system’s pressure lowers or the sewer system pressure suddenly spikes. This can, in certain circumstances, cause contaminated water from another source to flow backwards up into the plumbing system. This can contaminate part of the plumbing system, requiring that it be flushed out before it can return to normal operation. In order to avoid this kind of issue, a backflow prevention device is installed in the sewer line.

Most backflow prevention devices for homes are simple one-way valves. When the water is flowing in the right direction, the valve stays open. If backflow begins to occur, the valve snaps shut to prevent the plumbing system from being contaminated.


Backflow prevention devices are emergency systems, which means that you’re not going to be relying on yours often. If a problem develops with the system, you probably aren’t even going to realize it until backflow occurs and the device doesn’t work. That’s why you need to schedule maintenance at least once a year, to make sure that it’s still protecting your home.

Service King Plumbing & HVAC offers backflow prevention maintenance throughout Lake in the Hills, IL. 

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