Utah Code § 11-36a-201
§ 11-36a-201. Impact fees.
(1) A local political subdivision or private entity shall ensure that any imposed impact fees comply with the requirements of this chapter. (2) A local political subdivision and private entity may establish impact fees only for those public facilities defined in Section 11-36a-102. (3) Nothing in this chapter may be construed to repeal or otherwise eliminate an impact fee in effect on the effective date of this chapter that is pledged as a source of revenues to pay bonded indebtedness that was incurred before the effective date of this chapter.