Wyo. Stat. Ann. § 1-26-805
For the purposes of W.S. 1-26-804 through 1-26-809 'public utility service' means and includes communication or transmission of intelligence or messages by telephone service; electricity for light, heat, power and like purposes; natural or artificial gas for heat, light, power and like purposes; steam for heat, power and like purposes; or water for municipal, domestic, agricultural, irrigation, manufacturing and like purposes, including surface water drainage in accordance with W.S. 16-10-103.