Tex. Water Code § 53.018: POSTING NOTICE.

(a) The person receiving the notice shall post a copy of it at the courthouse door and a copy at each of four different places inside the proposed district. He shall post the notice for at least the 10 days that immediately precede the day set for the hearing.

(b) The person posting the notice shall swear in writing, before some officer who is authorized by law to administer oaths, that he posted the notice according to the provisions of Subsection (a) of this section. The sworn written statement is conclusive of the facts sworn to.

Acts 1971, 62nd Leg., p. 398, ch. 58, Sec. 1, eff. Aug. 30, 1971.