(1) To pay for the construction, operation, and maintenance of any works, and expenses preliminary and incidental thereto, which the board is authorized to construct for the benefit of the district, the board is authorized to enter into contracts providing for payment in installments or to issue negotiable bonds of the district. If bonds are authorized, the same shall bear interest at a rate such that the net effective interest rate of the issue does not exceed the maximum net effective interest rate authorized, payable semiannually, and shall be due and payable not more than fifty years from their dates. The form, terms, and provisions of said bonds or contracts, provisions for their payment, and conditions for their retirement and calling, not inconsistent with law, shall be vested and determined by the board, and they shall be issued in payment of the works, equipment, expenses, and interest during and after the period of construction. Said bonds or contracts shall be executed in the name of and on behalf of the district and signed by the president of the board, the seal of the district affixed thereto and attested by the secretary of the board. Said bonds or contracts must be in such denominations or upon such conditions as the board determines and shall be payable to bearer and may be registered in the office of the county treasurer of each of the counties wherein the district or part of it is situated, with the interest coupons payable to bearer, which shall bear the facsimile signature of the president of the board. Bond interest shall be exempt from all state, county, municipal, school, and other taxes imposed by any taxing authority of the state of Colorado and shall not be sold at less than par and accrued interest.

(2) Whenever the board incorporated under this article, by resolution adopted by majority of said board, determines that the interests of said district and the public interest or necessity demand the acquisition, construction, or completion of any source of water supply, waterworks, or other improvements or facilities, or the making of any contract with the United States or other persons or corporations, to carry out the objects and purposes of said district, wherein the indebtedness or obligation is created, to satisfy which shall require a greater expenditure than the ordinary annual income and revenue of the district permits, said board shall order the submission of the proposition of incurring such obligation or bonded or other indebtedness for the purposes set forth in said resolution to the qualified taxpaying electors of the district at an election held for that purpose. Any election held for the purpose of submitting any proposition of incurring such obligation or indebtedness may be held separately or may be consolidated or held concurrently with any other election authorized by law at which such qualified taxpaying electors of the district are entitled to vote. Notice of the resolution and election shall be published in a form sufficient to apprise the taxpaying electors of the objects and purposes for which the indebtedness is proposed to be incurred, the estimated cost of the works or improvement, the amount of principal of the indebtedness to be incurred therefor, and the maximum rate of interest to be paid on such indebtedness. Such resolution and notice shall also fix the date upon which such election shall be held, the manner of holding the same, and the method of voting for or against the incurring of the proposed indebtedness. Such election shall be held in the same general manner as in this article provided for the election of directors. The bond issue or indebtedness proposed shall not be valid unless a majority of those voting at the election held for that purpose vote in favor of such bond issue or indebtedness in accordance with the terms of the resolution.