Amend HB 1644 on third reading as follows: (1) In added Section 51.537, Water Code, insert a new Subsection (a) to read as follows, and renumber the remaining subsections of Section 51.537 accordingly: (a) This section applies only to a municipality any portion of which is located in a county with a population of more than 800,000 and less than 1.3 million. (2) In added Section 54.813, Water Code, insert a new Subsection (a) to read as follows, and renumber the remaining subsections of Section 54.813 accordingly: (a) This section applies only to a municipality any portion of which is located in a county with a population of more than 800,000 and less than 1.3 million.