(1) The acquisition, construction, reconstruction, lease, improvement, betterment, or extension of any water facilities or sewerage facilities, or both, and the issuance in anticipation of the collection of revenues of such facilities of bonds to provide funds to pay the cost thereof may be authorized under this part 4 by action of the board of county commissioners taken at a regular or special meeting by a vote of a majority of the members of the board.

(2) The board, in determining such cost, may include all costs and estimated costs of the issuance of said bonds; all engineering, inspection, fiscal, and legal expenses; interest which it is estimated will accrue during the construction or other acquisition period and for a period of not exceeding one year thereafter on money borrowed or which it is estimated will be borrowed pursuant to this part 4; any discount on the sale of the bonds; costs of financial, professional, and other estimates and advice; contingencies; any administrative, operating, and other expenses of the county prior to and during such acquisition period and for a period of not exceeding one year thereafter, as may be determined by the board; and all other expenses as may be necessary or incident to the financing, acquisition, improvement, equipment, and completion of any water or sewerage facilities, joint water and sewer system, or part thereof, and the placing of the same in operation; and also such provision or reserves for working capital, operation, maintenance, or replacement expenses or for payment or security of principal of or interest on any bonds during or after such an acquisition or improvement and equipment as the board may determine; and also reimbursements to the federal government, or any agency, instrumentality, or corporation thereof, of any moneys theretofore expended for or in connection with any such water or sewerage facilities, or both.