Septic systems inspections are required for a number of reasons
An inspection to verify that a system is adequate for the building that is being connected to it may be required when:
a) connecting or reconnecting power to an existing building
b) for a building permit if the house is being renovated or an addition built on
c) for a building permit when a new structure is being conected to an existing system
These inspections would typically be done by a Qualified Person or Professional Engineer.
In recent years, it is becoming more common for a buyer to have the function of the septic sytem assessed during a real estate transfer to investigate the condition of the components and give an estimate of the system's capabilities.
WWNS recommends you always use a certified professional to perform these inspections and has begun to offer training specifically for those carrying out inspections for real estate transfers.