Utah Const. art. XIII, § 3
(1) The following are exempt from property tax:
(i) water rights, reservoirs, pumping plants, ditches, canals, pipes, flumes, power plants, and transmission lines to the extent owned and used by an individual or corporation to irrigate land that is:
(j)
(i) if owned by a nonprofit entity and used within the State to irrigate land, provide domestic water, as defined by statute, or provide water to a public water supplier:
(iii) land immediately adjacent to a reservoir, ditch, canal, or pipe that is exempt under Subsection (1)(j)(i)(B) if the land is:
(2)
(a) The Legislature may by statute exempt the following from property tax:
(3) The following may be exempted from property tax as provided by statute:
(b) property owned by the unmarried surviving spouse or the minor orphan of a person who: