Okla. Stat. tit. 27A, § 2-6-101 (2026)

For purposes of this article: 1. "Aquifer storage and recovery (ASR)" means delivery of water into an aquifer for later recovery and use; 2. "Disposal system" means pipelines or conduits, pumping stations and force mains and all other devices, construction, appurtenances and facilities used for collecting, conducting or disposing of wastewater, including treatment systems; 3. "Drainage basin" means all of the water collection area adjacent to the highest water line of a reservoir which may be considered by the Department to be necessary to protect adequately the waters of the reservoir. The area may extend upstream on any watercourse to any point within six hundred (600) feet of the highest water line of the reservoir; 4. "Indirect discharge" means the introduction of pollutants to a publicly owned treatment works from a nondomestic source; 5. "Pollutant" means dredged spoil, solid waste, incinerator residue, sewage, garbage, sewage sludge, munitions, chemical wastes, biological materials, radioactive materials, heat, wrecked or discarded equipment, rock, sand, cellar dirt and industrial, municipal, and agribusiness waste discharged into waters of the state; 6. "Public water supply" means water supplied to the public for domestic or drinking purposes; 7. "Reservoir" means any reservoir, whether completed or in the process of construction, whether or not used as a water supply, and whether or not constructed by any recipient of water therefrom; 8. "Sludge" means nonhazardous solid, semi-solid, or liquid residue generated by the treatment of domestic sewage or wastewater by a treatment works, or water by a water supply system, or manure, or such residue, treated or untreated, which results from industrial, nonindustrial, commercial, or agribusiness activities or industrial or manufacturing processes and which is within the jurisdiction of the Department; 9. "Small public sewage system" means a nonindustrial wastewater treatment system which has an average flow of five thousand (5,000) gallons per day or less; 10. "Treatment works" means any facility used for the purpose of treating or stabilizing wastes or wastewater. "Treatment works" shall be synonymous with "wastewater works"; and 11. "Water supply system" means a water treatment plant, water wells, and all related pipelines or conduits, pumping stations and mains and all other appurtenances and devices used for distributing drinking water to the public and, as such, shall be synonymous with waterworks. Added by Laws 1993, c. 145, § 56, eff. July 1, 1993. Amended by Laws 1993, c. 324, § 19, eff. July 1, 1993; Laws 1994, c. 353, § 8,

eff. July 1, 1994; Laws 1997, c. 217, § 2, eff. July 1, 1997; Laws 1999, c. 413, § 5, eff. Nov. 1, 1999; Laws 2002, c. 227, § 1, emerg. eff. May 9, 2002; Laws 2005, c. 138, § 1, eff. Nov. 1, 2005; Laws 2017, c. 318, § 1, emerg. eff. May 22, 2017.