A septic tank is an underground container used to treat and store wastewater from homes or buildings that are not connected to a public sewer system. It collects waste from toilets, sinks, and drains, separating solids from liquids. The solids settle at the bottom of the tank, while the liquids are filtered out and allowed to slowly flow into the ground through a drain field. Septic tanks help prevent pollution and maintain hygiene by safely handling waste, though they require regular maintenance to avoid blockages or overflowing.

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