to 349.961, inclusive.  The faith of the State is hereby pledged that NRS 349.935 to 349.961, inclusive, will not be repealed, amended or modified to impair any outstanding bonds or any revenues pledged to their payment, or to impair, limit or alter the rights or powers vested in a city or county to acquire, finance, improve and equip a water project in any way that would jeopardize the interest of any lessee, purchaser or other obligor, or to limit or alter the rights or powers vested in the Director to perform any agreement made with any lessee, purchaser or other obligor, until all bonds have been discharged in full or provisions for their payment and redemption have been fully made.