By a majority vote of each governing body, a public health district may be established by:

1. (1) two or more counties;
2. (2) two or more municipalities;
3. (3) a county and one or more municipalities in the county; or
4. (4) two or more counties and one or more municipalities in those counties.

Acts 1989, 71st Leg., ch. 678, Sec. 1, eff. Sept. 1, 1989.