(a) The commissioners court of the county may order an election on the issue of the creation of a district:
(1) on the commissioners court's own motion; or
(2) after the filing of a written petition signed by a number of the registered voters who reside in the county equal to at least five percent of the votes received in the county in the most recent gubernatorial general election.
(b) The petition or commissioners court's motion must include:
(1) the name of the proposed district;
(2) an accurate description of the area to be included in the district by metes and bounds and by public roads or rights-of-way; and
(3) an accurate plat of the area to be included in the district.