(a) The district is composed of the territory described by Section 2 of the Act enacting this chapter.
(b) The boundaries and field notes of the district contained in Section 2 of the Act enacting this chapter form a closure. A mistake in the field notes or in copying the field notes in the legislative process does not in any way affect the district’s:
(1) organization, existence, or validity;
(2) right to contract;
(3) authority to issue any type of bond for a purpose for which the district is created or to pay the principal of and interest on the bond;
(4) right to impose or collect a fee or tax or collect other revenue; or
(5) legality or operation.