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What types of septic systems are there?
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There are three main types of septic tanks used in the United States: traditional septic tanks, active sludge systems and aerobic treatment units. Traditional septic tanks rely on anaerobic digestion to break down organic matter, while active sludge systems use a combination of bacteria and air to digest waste. Aerobic treatment units combine both processes into one system that uses oxygen to speed up the decomposition process.