human
What is the difference between a septic tank and a sewage treatment plant?
assistant
A septic tank is a small, underground holding tank that filters waste from a building's plumbing system. It is designed to treat wastewater before it enters the soil or groundwater. A sewage treatment plant is a larger facility that treats wastewater in a more sophisticated way than a septic tank. It typically includes several stages of biological treatment, chemical treatment, and physical treatment.