For many homeowners, a septic system provides the best way of dealing with wastewater. If your home is not connected to municipal sewer systems, then a septic system is a necessity. While a septic tank may be little intimidating for some, they are more common than you might think. In fact, around one in five homes in the US relies on septic systems for dealing with wastewater. If your home uses a septic tank for wastewater treatment, here are three things that you should know.