020-21 Wyo. Code R. § 21-2
(a) These regulations apply to any person who prepares or applies treated wastewater from domestic sewage.
(b) These regulations are not applicable if the primary intent is to provide treatment and/or disposal of a wastewater. Treatment and disposal are regulated under appropriate sections of Chapter 25, Wyoming Water Quality Rules and Regulations.
(c) If the reuse of treated wastewater involves the construction of facilities for the disinfection, delivery, storage or land application, a construction permit is required in accordance with the provisions of Chapters 3 and 11, Wyoming Water Quality Rules and Regulations. Such a permit constitutes approval to reuse the treated wastewater. This permit is not an operational permit and does not require periodic renewal. If there are no structural facilities requiring a construction permit, the reuse of wastewater will be authorized by a land application permit issued in accordance with these regulations. The land application permit is not an operational permit and does not require periodic renewal.
(d) These regulations are not applicable to the discharge of a treated wastewater which is subject to a discharge permit issued pursuant to Chapter 2, Wyoming Water Quality Rules and Regulations.
(e) These regulations are not applicable to treated wastewater reused at reclamation sites regulated by the Land Quality Division under Article 4 of the Wyoming Environmental Quality Act.
(f) These regulations are not applicable to treated wastewater reused for irrigation of grass, shrubs and trees at the treatment works.
(g) These regulations are not applicable to the disposal of gray water.
(h) These regulations are not applicable to groundwater recharge projects which are regulated by the Underground Injection Control Program of the Department of Environmental Quality, Water Quality Division.
020-21 Wyo. Code R. § 21-2