How do you identify a concrete or plastic septic tank that has two compartments instead of one?

Study for the North Carolina Septic Inspector Exam. Use detailed flashcards and multiple choice questions with hints and explanations. Get exam-ready today!

To identify a two-compartment septic tank, look for a dividing wall or baffle inside the tank that separates it into two chambers, along with two access openings or manholes. The internal divider is the clear, physical sign that the tank is set up for two stages of settling and digestion. Two lids or openings are usually present so each chamber can be inspected and pumped. Other cues like surface roughness or color aren’t reliable indicators of multiple compartments, and a single lid doesn’t guarantee a two-chamber configuration. The divider and two access points are what reliably indicate a twin-compartment tank.