Ariz. Admin. Code § 18-11-301
The terms in this Article have the following meanings:
"Direct reuse" has the meaning prescribed in R18-9-701(1).
"Disinfection" means a treatment process that uses oxidants, ultraviolet light, or other agents to kill or inactivate pathogenic organisms in wastewater.
"Filtration" means a treatment process that removes particulate matter from wastewater by passage through porous media.
"Gray water" means wastewater, collected separately from a sewage flow, that originates from a clothes washer, bathtub, shower, or sink, but it does not include wastewater from a kitchen sink, dishwasher, or a toilet.
"Industrial wastewater" means wastewater generated from an industrial process.
"Landscape impoundment" means a manmade lake, pond, or impoundment of reclaimed water where swimming, wading, boating, fishing, and other water-based recreational activities are prohibited. A landscape impoundment is created for storage, landscaping, or for aesthetic purposes only.
"NTU" means nepholometric turbidity unit.
"On-site wastewater treatment facility" has the meaning prescribed in A.R.S. § 49-201(24).
"Open access" means that access to reclaimed water by the general public is uncontrolled.
"Reclaimed water" has the meaning prescribed in A.R.S. § 49-201(31).
"Recreational impoundment" means a manmade lake, pond, or impoundment of reclaimed water where boating or fishing is an intended use of the impoundment. Swimming and other full-body recreation activities (for example, water-skiing) are prohibited in a recreational impoundment.
"Restricted access" means that access to reclaimed water by the general public is controlled.
"Secondary treatment" means a biological treatment process that achieves the minimum level of effluent quality defined by the federal secondary treatment regulation at 40 CFR § 133.102.
"Sewage" means untreated wastes from toilets, baths, sinks, lavatories, laundries, and other plumbing fixtures in places of human habitation, employment, or recreation.
Ariz. Admin. Code § R18-11-301