Indiana Code Title 16. Health § 16-20-5-2

Sec. 2. (a) An area board of health consists of two (2) members from each participating county board of health, to be selected by the appropriate county executive.  In addition, the health officer of each participating county and the county treasurer from the participating county with the highest population are members.

(b) Members serve for terms of two (2) years, beginning on the first day of the first month following the date of the establishment of the area board of health.

(c) Appointments to fill vacancies may be made by the county executive of the county where the vacancy exists.