020-5 Wyo. Code R. § 5-19
(a) Level 1 Water Systems certificates will be converted to Level 1 Water Treatment certificates upon the first renewal cycle after final adoption of this rule. If the operator prefers to be certified as a Level 1 Water Distribution or as both Level 1 Water Treatment and Level 1 Water Distribution, the operator shall request the alternate certification prior to the first renewal after final adoption of this rule.
(b) Level 1 Wastewater Systems certificates will be converted to Level 1 Wastewater Treatment certificates upon the first renewal cycle after final adoption of this rule. If the operator prefers to be certified as a Level 1 Wastewater Collection or as both Level 1 Wastewater Treatment and Level 1 Wastewater Collection, the operator shall request the alternate certification prior to the first renewal after final adoption of this rule.
020-5 Wyo. Code R. § 5-19