(a) The district is composed of the territory described by Section 4, Chapter 1160, Acts of the 78th Legislature, Regular Session, 2003, as that territory may have been modified under:
(1) § 3821.108 or its predecessor statute, former Section 27, Chapter 1160, Acts of the 78th Legislature, Regular Session, 2003;
(2) Subchapter J, Chapter 49, Water Code; or
(3) other law.
(b) The boundaries and field notes of the district contained in Section 4, Chapter 1160, Acts of the 78th Legislature, Regular Session, 2003, form a closure. A mistake made 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 issue any type of bond for a purpose for which the district is created or to pay the principal of and interest on a bond;
(3) right to impose or collect an assessment or tax; or
(4) legality or operation.