Tex. Water Code § 51.166
A district organized under the provisions of this chapter may solicit cooperation, donations, and contributions from the United States, the state, or any other state or nation; any county, municipality, water improvement district, water control and improvement district, drainage district, or any other political subdivision of the state; or any person, copartnership, corporation, or association.
Acts 1971, 62nd Leg., p. 110, ch. 58, Sec. 1, eff. Aug. 30, 1971.