Neb. Rev. Stat. § 14-2119: Neb. Rev. Stat. § 14-2119

In case any portion of the metropolitan utilities district is supplied with natural gas or water for domestic, mechanical, public, or fire purposes by any individual, partnership, limited liability company, or corporation, then the board shall have the power and authority to fix rates and regulate the conditions of service and the conduct of the utility affording such supply.