Section 73-27-15 - Revenue bonds; mandatory rates for the water system; mandamus; impairment of paymentA. The authority shall establish rates for services rendered by the water system to provide revenue sufficient to meet the following requirements, and such rates shall remain in effect until the bond issue is liquidated. Revenue shall be sufficient to: (1) pay all reasonable expenses of operation of the water system; (2) pay all interest on the water system revenue bonds as it comes due; (3) provide a sinking fund adequate to discharge the revenue bonds as they mature; and (4) provide a capital fund for system improvements and replacements. B. In the event the authority fails or refuses to establish rates for the water system as required in this section, any bondholder may apply to the district court or courts within which jurisdiction the system is located for a mandatory order requiring the authority to establish rates that will provide revenues adequate to meet the requirements of this section. C. Any law that authorizes the pledge of any or all of the pledged water system net revenues to the payment of any revenue bonds issued pursuant to the Eastern New Mexico Water Utility Authority Act or that affects the pledged net revenues of the water system, or any law supplemental to or otherwise appertaining to that act, shall not be repealed or amended or otherwise directly or indirectly modified in such a manner as to impair adversely any such outstanding revenue bonds, unless the outstanding revenue bonds have been discharged in full or provision has been fully made for payment of the bonds.