The district is composed of the territory:
(1) in Jefferson and Orange Counties described by Sections 1 and 1A, Chapter 147, Acts of the 51st Legislature, Regular Session, 1949, as that territory may have been modified under:
(A) Section 3 or 3a, Chapter 103, Acts of the 41st Legislature, 1st Called Session, 1929 (Article 8263a, Vernon's Texas Civil Statutes), before August 30, 1971;
(B) Subchapter H, Chapter 62, Water Code; or
(C) other law; and
(2) described by Section 3 of the Act enacting Subchapter F.