(a) The district is composed of the territory described by Section 3, Chapter 566, Acts of the 73rd Legislature, Regular Session, 1993, as that territory may have been modified under:
(1) Subchapter J, Chapter 49, Water Code; or
(2) other law.
(b) The boundaries and field notes of the district form a closure. A mistake made in the field notes or in copying the field notes in the legislative process does not affect:
(1) the district’s organization, existence, or validity;
(2) the district’s right to issue any type of bond or to issue or enter into another type of obligation for a purpose for which the district is created;
(3) the district’s right to levy or collect an assessment or tax; or
(4) the legality or operation of the district or the district’s governing body.