Idaho Code § 39-1416
Every county and municipality is authorized to accept, receive, receipt for, disburse, and expend federal and state moneys and all other moneys, public or private, made available by grant, loan, gift or devise for public health purposes, including the construction, alteration, equipping, operation and maintenance of projects authorized by this act and the federal act, subject only to the terms of such grant.
Any two (2) or more municipalities and/or counties may join together for the owning, construction, alteration, repair, equipping, operation and/or maintenance of a health facility, which may be located within or without any such municipality or county, and the funds therefor shall be contributed by each such municipality and/or county as the participating municipalities and counties may mutually agree.
Any municipality or county may enter into a contract or other arrangement with any other municipality or county to obtain health facilities or similar services, and pay for the same out of municipal or county funds.
Idaho Code § 39-1416