The plant at 1617 Helton Road near Bean Station employs, or at least employed until this week, some 100 people, records show.
A search warrant also indicates that plant may have been illegally paying workers to avoid state and federal scrutiny.
The septic system failed in March, sending waste into the area and exposing nearby residents to potential contamination, according to TDEC.
"(TDEC) provided well sampling to the 12 households which had the potential to be impacted by surface flow of waste," TDEC spokesman Kim Schofinski said in a statement to 10News.
The state also is assisting impacted households so they can link to public water systems and install treatment, according to Schofinski.
On an emergency basis, Southeastern Provision is now hauling its sewage waste in 6,000-gallon loads in a tanker to a Greeneville site, according to records.
Document show a temporary pump and haul system permit was issued March 26 to plant owner James Brantley.
The temporary process will include disposal through manual pumping into a tanker, records show.
"The operation should be such that there is no discharge of wastewater to any surface or subsurface system, watercourse or drainage ditch because of an overflow, spills, and/or because of the occurrence of any other condition that singly or in combination with any of the aforementioned conditions causes such discharge to any surface or subsurface stream, watercourse or drainage ditch," the permit states.
A pumping log must be maintained for review by the state and someone who represents the plant must be present "at all times" when waste is being transferred to the tanker to ensure spills don’t occur.