Subject to § 22–202(b) of this article and § 31–109 of this subtitle, the governmental units that are eligible to participate in the employees’ systems are: a political subdivision of the State, including: a county; a municipal corporation; and a special taxing area; and the following governmental units: an agency on aging, as designated by the legislative body of the agency on aging; the Allegany County Transit Authority; subject to § 31–104 of this subtitle, the Baltimore Metropolitan Council; a board or commission created by an Act of the General Assembly for public purpose and not for the profit of a private person; subject to § 31–105 of this subtitle, the Canal Place Preservation and Development Authority; the Chesapeake Bay Commission; a cooperative library commission; subject to § 31–103 of this subtitle, a community action agency, as designated by the legislative body of the community action agency; a fire department that receives any of its funds from or through a county, municipal corporation, special taxing area, or other political subdivision of the State; the Health Planning Council of Appalachia; the Howard County Economic Development Authority; the Interstate Commission on the Potomac River Basin; the Lower Shore Private Industry Council, Inc.; the Maryland Environmental Service; subject to § 31–106 of this subtitle, the Maryland Stadium Authority; a public library association or organization; subject to § 31–106.2 of this subtitle, the St. Mary’s Nursing Center, Inc.; the Tri–County Council for Western Maryland, Inc.; the Tri–County Council for Southern Maryland; subject to § 31–107 of this subtitle, the University of Maryland Medical System Corporation; the Upper Potomac River Commission; subject to § 31–106.1 of this subtitle, the Maryland African American Museum Corporation; the Garrett County Office for Children, Youth and Families; the Somerset County Economic Development Commission; and the Dorchester County Sanitary Commission.