Most people have never even heard the term backflow when it comes to plumbing and that is pretty normal. The fact is that backflow prevention devices are more important than you might realize. Their purpose essentially is to stop undesirable reversal of flow of fluid or gas into your water supply. This can create all sorts of problems for businesses and homeowners. Thats why Royal Flush, the best plumber in Snellville, GA, always asks if you have had backflow testing recently. Not integrating one of these devices into your system could cause contaminated liquid to go back into your main water supply and you could be drinking and cleaning with and not even know. Also, gas to seep in and build up causing a rupture in your pipes.