Impact

A plastic septic tank is a durable, lightweight, underground container (often polyethylene) that collects household wastewater, separating solids (sludge), liquids (effluent), and fats/oils (scum) using gravity and bacterial action, allowing cleaner liquid to flow to a drain field. Key features include corrosion resistance, flexibility against shifting soil, easier installation than concrete, and typically two chambers for better settling, making them an efficient, modern alternative for sewage treatment.