Each sanitary commission may adopt a resolution that proposes to create a service area or to change the boundaries of an existing service area. The resolution shall refer to a plat of the member counties that clearly shows the boundary lines of the proposed service area. The governing body of each member county shall hold a public hearing to consider the proposed service area or boundary change. At least 10 days before the hearing required under this subsection, notice of the hearing shall be published in each member county in at least 1 newspaper of general circulation in the member county. If the governing body of each member county approves the proposed creation of a service area or the proposed boundary change, a copy of the plat and the resolution required under subsection (a) of this section shall be recorded among the land records of each member county. The sanitary commission shall give each service area to be created under this section a distinctive name. A service area is created when the requirements of this section have been met. Each service area created under this section is a separate taxing district. A change in the boundaries of an existing service area does not affect any outstanding bond issued with respect to the existing service area.