<human>: What is the difference between a septic system and a sewage treatment system?
<bot>: A septic system is a type of wastewater treatment system that uses biological processes to break down waste into water, carbon dioxide, and organic matter. It typically consists of a septic tank, which collects the waste from the home or business, and a drain field, where the treated water is released into the soil. Sewage treatment systems are designed to remove harmful substances such as bacteria, viruses, and other pollutants before the wastewater is discharged into the environment.