A type of system for treating the waste water from a house.
There are two main components to a septic system: the septic tank and the leaching bed. The system operates by trapping solids so they can be broken down by bacteria, then distributing the remaining water into the ground.
A septic system is typically used when a city-wide waste water system is not present. This is common on country properties. Septic systems usually must be approved by the local government.
Contrast with a holding tank.