All bonds of the authority may be sold at public or private sale. Such bonds shall be sold for a price not less than ninety-six per centum of the par value thereof, plus accrued interest, provided always that the interest cost to maturity of the monies realized from the sale of such bonds shall not exceed six per centum per annum.
Notwithstanding any other provisions of this title, any resolution or resolutions authorizing bonds or notes of the authority shall contain a covenant by the authority that it will at all times maintain rates, fees, rentals or other charges sufficient to pay, and that any contracts entered into by the authority for the sale or distribution of water shall contain rates, fees, rentals or other charges sufficient to pay, the cost of operation and maintenance of the properties, the principal of and interest on any obligation issued pursuant to such resolution or resolutions as the same severally become due and payable, and to maintain any reserves or other funds required by the terms of such resolution or resolutions.
N.Y. Pub. Auth. Law § 1098