Okla. Admin. Code § 252:627-1-2
In addition to the definitions contained in the Environmental Quality Code (27A O.S. § 2-1-101 et seq.), the following words and terms, when used in this Chapter, shall have the following meaning, unless the context clearly indicates otherwise:
"Bypass" means the intentional or unintentional diversion of a waste stream from any portion of a wastewater treatment system or a water reuse system.
"Cell" means an individual basin of a lagoon system.
"DEQ" means the Oklahoma Department of Environmental Quality.
"Discharge" means any intentional or unintentional release by leaking, pumping, pouring, emitting, emptying, dumping, escaping, seeping, overflowing, leaching or other means of release of wastewater or reclaimed water into any waters of the state or into or on any location where they may enter waters of the state.
"End-of-pipe" means the terminal points in all reclaimed water users'distribution systems.
"Lagoon" means a soil or lined basin, either below or above ground level, that is designed, maintained and operated to store, recycle and/or treat wastewater.
"Operator" means the individual who is properly certified by DEQ and who is responsible for the maintenance and operation of a water reuse system.
"MOR" means Monthly Operation Report.
"Person" means any individual, company, corporation, government agency, municipality, or any other entity.
"Reclaimed water" means wastewater that has gone through various treatment processes to meet specific water quality criteria with the intent of being used in a beneficial manner.
"Supplier" means a person or entity that treats and provides reclaimed water pursuant to a permit issued by DEQ.
"Treatment works" means any plant, disposal field, lagoon, incinerator or other facility used to treat, stabilize, hold or reclaim wastewater.
"User" means a person or entity that uses reclaimed water. In those instances in which the supplier and the user are the same entity, the entity is a "supplier" subject to the provisions of this Chapter.
"Water reuse system" means a treatment and distribution system designed to treat and supply reclaimed water.
"Wetted perimeter" means the area where a land application device distributes reclaimed water.
Okla. Admin. Code § 252:627-1-2