Texas Water Code - WATER § 36.124. District Act or Proceeding Presumed Valid

(1) the third anniversary of the effective date of the act or proceeding has expired; and

(2) a lawsuit to annul or invalidate the act or proceeding has not been filed on or before that third anniversary.

(1) an act or proceeding that was void at the time it occurred;

(2) an act or proceeding that, under a statute of this state or the United States, was a misdemeanor or felony at the time the act or proceeding occurred;

(3) a rule that, at the time it was passed, was preempted by a statute of this state or the United States, including Section 1.06 or 109.57, Alcoholic Beverage Code; or

(4) a matter that on the effective date of this section: