As used in this subchapter:
(1) "Cooperative procurement" means procurement conducted by, or on behalf of, more than one (1) public procurement unit or by a public procurement unit with an external procurement activity;
(2) (A) "External procurement activity" means any buying organization not located in this state which, if located in this state, would qualify as a public procurement unit.
(B) An agency of the federal government is an external procurement activity;
(3) "Local public procurement unit" means:
(A) Any county, city, town, state agency, and any other subdivision of the state or public agency thereof;
(B) Any fire protection district;
(C) Any regional water distribution district;
(D) Any rural development authority;
(E) Any public authority;
(F) Any public educational, health, or other institution;
(H) Any nonprofit corporation providing fire protection services to a rural area or providing drinking water to the public in a rural area;
(G) Any nonprofit corporation during the time that it contracts with the Department of Human Services to provide services to individuals with developmental disabilities or for transportation services, so long as the contract exceeds seventy-five thousand dollars ($75,000) per year;
(H) Any nonprofit corporation providing fire protection services to a rural area or providing drinking water to the public in a rural area; and
(I) To the extent not prohibited by law, any other entity that expends public funds for the acquisition or leasing of commodities and services;
(4) "Public procurement unit" means either a local public procurement unit or a state public procurement unit; and
(5) "State public procurement unit" means the Office of State Procurement and any other procurement agency of this state.
Any public procurement unit may either participate in, sponsor, conduct, or administer a cooperative purchasing agreement for the acquisition of any commodities or services with one (1) or more public procurement units or external procurement activities in accordance with an agreement entered into between the participants. Such cooperative purchasing may include, but is not limited to, joint or multiparty contracts between public procurement units and open ended state public procurement unit contracts which are made available to local public procurement units.