Question

Design of septic tank requires consideration of space for the following item(s).

• A. Settling of incoming sewage
• B. Storage of digested sludge
• C. Installation of liner to allow seepage of effluent
• D. Digestion of the settled sludge

Hint:

Septic tank = Settling + Digestion + Sludge Storage. Effluent seepage occurs in soak pits, not in the septic tank itself.