Utah Code Ann. § 17B-1-415
(1)
(a) A local district that provides a wholesale service may adopt a resolution approving the annexation of an area outside the local district's boundaries if:
(i) the area is annexed by or otherwise added to, or is added to the retail service area of, a municipality or another local district that:
(b) For purposes of this section:
(2) Notwithstanding Subsection (1)(a)(ii), an area outside the boundaries of a local district providing a wholesale service and located partly or entirely within the boundaries of another local district that provides the same wholesale service may be annexed to the local district if:
(3) A local district that provides transportation services may adopt a resolution approving the annexation of the area outside of the local district's boundaries if: