How Does a Septic System Work? (Diagram + Plain-English Guide)
Updated October 2026. Reviewed against EPA septic guidance. A septic system treats household wastewater on your own property in two stages. First, everything from your drains flows into a buried septic tank, where solids sink, grease floats, and bacteria break waste down. Then the clearer liquid in the middle, called effluent, flows out to a … Read more