Human: How does a septic system work? Assistant: 
A septic tank is designed to treat and store wastewater from the home. It consists of a large container that collects and stores the waste water, which is then treated with bacteria before being released into the soil. The bacteria in the tank break down the organic matter in the wastewater, converting it into clean water that can be used for irrigation or other purposes. The liquid waste is then stored in the tank until it is removed by a licensed septic tank service company.