human
What is a septic system, and what are some of the pros and cons of septic systems?
assistant
A septic tank is an underground sewage treatment system that uses anaerobic bacteria to break down organic matter. It consists of two parts: a septic tank and a drain field. The septic tank is where solids and liquids are separated and the liquid is sent to the drain field. The drain field is made up of gravel or stone and absorbs the liquid from the septic tank. The liquid in the drain field eventually drains into a natural body of water such as a stream or river.