How does a single chamber septic tank work?

How does a single chamber septic tank work? Septic tanks work by allowing waste to separate into three layers: solids, effluent and scum (see illustration above). The solids settle to the bottom, where microorganisms decompose them. The scum, composed of waste that’s lighter than water, floats on top. Do all septic tanks have two chambers? … Continue reading How does a single chamber septic tank work?