(a) In any county that has by county board action established a program of pretrial bond home supervision by use of an approved monitoring device, or a program using an approved monitoring device as a condition of probation or conditional discharge, the county treasurer shall establish a substance abuse services fund. Fees collected under paragraph (b)(14.1) of Section 110-10 of the Code of Criminal Procedure of 1963 and paragraph (b)(10)(iv) of § 5-6-3 of the Unified Code of Corrections shall be deposited into this fund. The county treasurer shall not disburse the monies from the fund except at the direction of the county board in each county.
     (b) Monies in the substance abuse fund shall only be appropriated by the county board to be used within the county where collected for the establishment and maintenance of facilities and programs for the medical care, treatment or rehabilitation of all persons suffering from substance abuse problems, including the hospitalization of pregnant women who are addicted to alcohol, cannabis or controlled substances and for needed care of their newborn children.
     (c) Monies expended from the substance abuse services fund shall be used to supplement, not supplant, county appropriations for substance abuse services.
     (d) Interest earned on monies deposited in the substance abuse services fund may be used by the county for its ordinary and contingent expenditures.