Utah Code § 10-3-703

(1) (a) The governing body of a municipality may impose a criminal penalty for the violation of any municipal ordinance by a fine not to exceed the maximum class B misdemeanor fine under Section 76-3-301, by a term of imprisonment up to six months, or by both the fine and term of imprisonment. (b) Notwithstanding Subsection (1)(a), a municipality may not impose a criminal penalty greater than an infraction for a violation pertaining to an individual's pet, as defined in Section 4-12-102, or an individual's use of the individual's residence unless: (i) the violation: (A) is a private nuisance as that term is defined in Section 78B-6a-101; and (B) threatens the health, safety, or welfare of the individual or an identifiable third party; or (ii) the municipality has imposed a fine on the individual for a violation that involves the same residence or pet on three previous occasions within the past 12 months. (c) Subsection (1)(b) does not apply to municipal enforcement of a building code or fire code ordinance in accordance with Title 15A, State Construction and Fire Codes Act. (2) (a) Except as provided in Subsection (2)(b), the governing body may prescribe a civil penalty for the violation of any municipal ordinance by a fine not to exceed the maximum class B misdemeanor fine under Section 76-3-301. (b) A municipality may not impose a civil penalty and adjudication for the violation of a municipal moving traffic ordinance. (3) (a) Except as provided in Subsection (3)(b) or Section 77-7-18, a municipal officer or official who is not a law enforcement officer described in Section 53-13-103 or a special function officer described in Section 53-13-105 may not issue a criminal citation for a violation that is punished as a misdemeanor. (b) Notwithstanding Subsection (1) or (3)(a), the following may issue a criminal citation for a violation that is punished as a misdemeanor if the violation threatens the health and safety of an animal or the public: (i) a fire officer described in Section 53-7-102; or (ii) an animal control officer described in Section 11-46-102. (4) A municipality may not issue more than one infraction within a 14-day time period for a violation described in Subsection (1)(b) that is ongoing.