Designing a septic tank involves considering various factors to ensure effective wastewater management. Size and Capacity is crucial, as the tank must accommodate the number of occupants, water fixtures, and flow rates in your home. For instance, a family of four typically requires a minimum tank size of around 1,000 - 1,250 gallons, while larger homes need bigger tanks.

A septic system in Ontario requires repair or replacement when it exhibits signs of failure such as sewage backing up into the home, pooling water in the drain field, or unusually lush grass over the drain field.

The Ontario Building Code (OBC) governs all septic system work, including significant repairs, alterations, and replacements, and often requires permits and the involvement of licensed professionals. Homeowners are responsible for maintaining their septic systems to protect public health and the environment.