What is septic tank?
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a tank, typically underground, in which sewage is collected and allowed to decompose through bacterial activity before draining by means of a soakaway.
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A septic tank is an underground chamber made of concrete, fiberglass or plastic through which domestic wastewater flows for basic treatment. Settling and anaerobic processes reduce solids and organics, but the treatment efficiency is only moderate. Septic tank systems are a type of simple onsite sewage facility.
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