Organic material in the ...
Published by Fred Adams, Manager Technology
Organic material in the waste that is too high for a system component or process causing clogging of the infiltrative surface of that component (i.e., sanitary wipes blocking a media filter) or a downstream component (subsurface soil absorption system) resulting in a hydraulic failure (effluent surfacing or backing up). would result in organic overload. And as said by Chris, poor maintanace and operation is a reason as well.