Flow measurement is a missing link in determining why septic systems may fail. Do we really know the flow entering a septic tank? Do we really know a way to document when a septic system is in a state of hydraulic overload? Daily flow can exceed the design capacity of the system, resulting in frequent backups or puddling of sewage on the surface. Is the guess of daily sewage flow based on an engineer’s prescription? Or is it based on the number of bedrooms or, in the case of a restaurant, the number of seats? Onsite codes in each state
