What is an onsite sewage system?
In areas where public sewer is not available, homeowners must install sewage systems (also known as septic systems) on their property that will treat wastewater coming from their home. All facilities such as toilets, sinks, bathtubs, showers, washing machines, dishwashers, or anything else that generates sewage must be connected to a sewage system. Footing drains, roof drains, storm water pipes, and water softening waste should not be connected to sewage systems. These items should discharge away from the drainfield area, and in a manner that does not impact neighboring property. Also, water softener wastewater should not discharge near wells or surface water. Onsite sewage systems must be designed according to Washtenaw County standards, and must be inspected and approved by a Sanitarian (health inspector). Sewage systems are different from municipal sewers because they have a limited life expectancy, which can be drastically reduced if the system is improperly used or not maintained.