(a) This section applies only to a conservation and reclamation district, including a municipal utility district, that:
(1) is located wholly in more than one municipality, but on April 1, 1971, was not wholly in more than one municipality;
(2) was created or exists under Section 59, Article XVI, Texas Constitution;
(3) provides or has provided a fresh water supply, sanitary sewer services, and drainage services; and
(4) was not, on April 1, 1971, a party to a contract providing for a federal grant for research and development under 33 U.S.C. Sections 1155(a)(2) and (d).
(b) A municipality that has annexed area in the district is not required to obtain the consent of any municipality to annex additional area located wholly in the district other than the consent of the other municipalities that have annexed area in the district and have extraterritorial jurisdiction over the area proposed to be annexed.