For the purpose of owning, operating, improving, and managing its public water works system, a public sewage disposal system, heat facilities and devices, facilities, and other measures intended to conserve energy use, promote efficient energy use, or any combination thereof, the City may pledge all or any part of the net revenues of such enterprises in the manner provided by general laws of the State. (Amended 2011, No. M-6, § 4, eff. May 6, 2011; 2013, No. M-19 (Adj. Sess.), § 2, eff. May 20, 2014.)