Texas Local Government Code - LOC GOV'T § 572.056. Petition and Referendum

(a) If, before the date set for the adoption of a concurrent ordinance that creates a public utility agency or adds a public entity to an agency, 10 percent of the registered voters of a public entity required to publish notice of the creation or addition present a petition to the governing body of the entity requesting that a referendum be called, the ordinance may not take effect unless a majority of the qualified voters of the entity voting in the election have approved the ordinance.

(b) The public entity must hold the election in conformity with:

(c) Except as provided by Subsection (a), a concurrent ordinance is not subject to a referendum.