Septic tanks should have how many compartments?

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

Two compartments are used in septic tanks to maximize solids separation and protect the soil absorption field. When wastewater enters, heavier solids settle in the first chamber while lighter scum rises to the top. The baffle directs flow into the second chamber, extending detention time and allowing more solids to settle before the liquid exits to the drain field. This reduces solids and turbidity in the effluent, helping prevent clogging of the absorption system and promoting proper treatment. While older or smaller systems might have a single chamber, the standard residential design incorporates two compartments for more effective treatment.