Some types of septic systems in North Carolina require inspections.
These systems require the owner to contract with a certified subsurface
operator to monitor these systems at a preset frequency. The State of
North Carolina requires our office to inspect any conventional system
with a pump, any low pressure pipe system, and any system with
pre-treatment in addition to the inspection performed by a subsurface
operator.
See Rule 15A Environmental Quality NCAC Chapter 18 .1961 Maintenance of Sewage Systems Table V(a)