<human>: What is the difference between a septic and a leach field?
<bot>: A septic system is a wastewater treatment system that uses soil bacteria to break down waste. It is designed to treat wastewater from a home or business before it enters the ground. A leach field is an underground drainage system used in rural areas to move water away from buildings, roads, and other structures. It is usually made of gravel and is designed to drain excess water into the groundwater.