(a) The commissioners court of the county may acquire by purchase, construction, or otherwise an adequate source of surface or subterranean fresh water for supplying water to the county's courthouse or for other county purposes.
(b) To further an acquisition under Subsection (a), the commissioners court may purchase, construct, repair, and maintain:
(1) a pool, lake, or reservoir;
(2) a well;
(3) a dam; and
(4) any water treatment and distribution facility as may be required.
(c) The county must comply with the applicable water permit provisions of Title 2, Water Code.