(a) The district is composed of the territory described by Section 2 of the Act enacting this chapter, as that territory may have been modified under:
(1) § 3859.106;
(2) Subchapter J, Chapter 49, Water Code; or
(3) other law.
(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:
(1) the district’s organization, existence, and validity;
(2) the district’s right to issue any type of bond, including a refunding bond, for a purpose for which the district is created or to pay the principal of and interest on the bond;
(3) the district’s right to impose and collect an assessment or tax; or
(4) the legality or operation of the district or the board.
(c) A description of the district’s boundaries shall be filed with the Texas Commission on Environmental Quality. The commission by order may correct a mistake in the description of the district’s boundaries.