Iowa Code § 592.9: City utilities and utility boards.

All proceedings taken prior to July 1, 2023, purporting to provide for the establishment, organization, formation, operation, or maintenance of a city utility or utility board and not previously declared invalid by any court, are legalized, validated, and confirmed. All such proceedings are declared to be legally sufficient to create, establish, and authorize the maintenance and operation of a city utility, as defined in section 362.2, subsection 6.