Which statement about septic tank access openings is accurate when the tank has two compartments?

• A. There must be two access openings or manholes.
• B. A single opening is sufficient for two compartments.
• C. Access openings are not necessary for pumping.
• D. Access openings are optional.

Answer: (A)

When a septic tank is split into two compartments, each chamber needs its own access point for maintenance. Pumps and inspectors must be able to reach and remove contents from both compartments, and to observe the condition inside each section. A single opening would only give access to one side of the partition, leaving solids and scum in the other compartment and making thorough pumping and inspection impossible. Therefore, two access openings are required for a two-compartment tank, ensuring proper servicing and function. Access openings are not optional; they’re a necessary part of maintaining the system.