Iowa Admin. Code r. 567-68.2
For purposes of this chapter, the following terms shall have the meanings indicated:
"Cleaning" means removal of waste from private sewage disposal systems and other actions incidental to that removal.
"Commercial septic tank cleaner" means a person or firm engaged in the business of cleaning and disposing of waste from private sewage disposal systems, including a person or firm that owns and rents or leases portable toilets.
"Department" means the Iowa department of natural resources.
"Food commodity" means any commodity that is derived from an agricultural animal or crop, both as defined in Iowa Code section 717A1., which is intended for human consumption in its raw or processed state.
"Holding tank for waste" means any receptacle for the retention or storage of waste pending removal for further treatment or disposal.
"On-farm processing operation" means any place located on a farm where the form or condition of a food commodity originating from that farm or another farm is changed or packaged for human consumption, including but not limited to a dairy, creamery, winery, distillery, cannery, bakery, or meat or poultry processor. "On-farm processing operation" does not include food commodities processed by a person exclusively for use by the person and members of the person's household and the person's nonpaying guests and employees.
"Private sewage disposal system" means a system which provides for the treatment or disposal of domestic sewage from four or fewer dwelling units or the equivalent of fewer than 16 individuals on a continuing basis, including domestic waste, whether residential or nonresidential, but not including industrial waste of any flow rate except as provided for in 567-6811. (455B). "Private sewage disposal system" includes, but is not limited to, septic tanks as defined in 567-subrule 69.1(2); holding tanks for waste; and impervious vault toilets, portable toilets, and chemical toilets as described in 567-69.15(455B).
"Septage" means the liquid and solid material pumped from a septic tank, cesspool, or similar domestic sewage treatment system, or from a holding tank, when the system is cleaned or maintained.
"Tank" means any container which is placed on a vehicle to transport waste removed from a private waste facility.
"Toilet unit" means a portable or fixed tank or vessel holding untreated human waste without secondary wastewater treatment which is emptied for disposal. "Toilet unit" does not include a portable or fixed tank or vessel holding untreated human waste that is part of a recreational vehicle or marine vessel.
"Vehicle" means a device used to transport a tank, including a trailer.
"Waste" means human or animal excreta, water, scum, sludge, septage, and grease solids from private sewage disposal.
Iowa Admin. Code r. 567-68.2