(a) The department shall maintain staffing levels of case managers so that each region has enough case managers to allow caseloads not to exceed an average of:
(1) Twenty (20) active cases relating to initial assessments, including investigations of an allegation of child abuse or neglect; or
(2) Twenty (20) children monitored and supervised in active cases relating to ongoing services.
(b) The department shall comply with the maximum caseload ratios described in subsection (a).