human
What is a septic tank and how often should it be pumped?
assistant
A septic tank is an underground wastewater treatment system that uses bacteria to break down waste. It is designed to store and treat wastewater from homes, businesses, and other structures. The septic tank must be pumped out every few years to remove the solids that have accumulated in the bottom of the tank. The frequency of pumping will depend on the size of the tank and the type of soil in your area.