The board of county commissioners in each of the several counties is hereby authorized to acquire, establish, maintain and operate such solid waste disposal systems as are necessary and to provide reasonable and convenient access to such disposal systems by all the citizens of the county. For the purpose of establishing systems for solid waste disposal, the board of county commissioners may purchase, lease, condemn or receive as gifts such areas as are suitable, or the board may exchange land with any other unit or units of government under such terms as are mutually advantageous. In order that a county may acquire sites or systems as expeditiously and advantageously as possible, a county may use funds from current revenues, may use funds made available through the issuance of bonds, or may use funds made available from county building construction funds, and the provisions of chapter 10, title 31, Idaho Code, are hereby made applicable for the acquisition of solid waste disposal systems and a solid waste disposal system is declared to be a public building within the definition of chapter 10, title 31, Idaho Code, except that notwithstanding any other provisions of law, no board of county commissioners or other public authority shall be required to contract out the establishment, acquisition, operation or maintenance of a solid waste disposal system, but if it should elect to do so, it may waive the giving of a bond or other security in connection with such contract upon such terms and conditions as it deems appropriate, and provided further that any county may itself, without contracting out to any other party, establish, acquire, operate and maintain a solid waste disposal system.