Iowa Code § 230.18
The estates of persons with mental illness who may be treated or confined in any county hospital or home, or in any private hospital or sanatorium, and the estates of persons legally bound for their support, shall be liable to the county for the reasonable cost of such support.
[R60, §1488; C73, §1433; C97, §2297; C24, 27, 31, 35, 39, §3598; C46, 50, 54, 58, 62, 66, 71, 73, 75, 77, 79, 81, §230.18] 96 Acts, ch 1129, §113