CAN3-B66 applies to which equipment?

• A. Septic tanks and holding tanks
• B. Pipes and fittings
• C. Electrical panels
• D. Water heaters

Answer: (A)

CAN3-B66 is a standard that addresses the equipment used to store and treat wastewater in on-site sewage systems. It sets the requirements for septic tanks and holding tanks—covering aspects like watertight construction, suitable materials, the presence of baffles, appropriate inlet and outlet arrangements, access points for maintenance, and leakage testing. These tanks are the core components that hold wastewater in these systems, so the standard is specifically written to govern their design, construction, and safety.

Pipes and fittings, electrical panels, and water heaters fall under different standards and codes, so they aren’t what CAN3-B66 targets. By focusing on septic and holding tanks, this standard ensures the tanks themselves are durable, watertight, and safe to operate, which is essential for protecting groundwater and ensuring reliable system performance.