(a) The district is composed of the territory described by Section 1, Chapter 613, Acts of the 59th Legislature, Regular Session, 1965, as that territory may have been modified under:(1) Subchapter O, Chapter 51, Water Code;(2) Subchapter J, Chapter 49, Water Code;(3) Section 9052.052 or its predecessor statute, former Section 5, Chapter 613, Acts of the 59th Legislature, Regular Session, 1965; or(4) other law.(b) The boundaries and field notes of the district form a closure. A mistake 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 bonds or to pay the principal of and interest on the bonds;(3) the district's right to impose a tax; or(4) the legality or operation of the district or its governing body. Added by Acts 2015, 84th Leg., R.S., Ch. 855 (S.B. 1162), Sec. 1.06, eff. April 1, 2017.