N.C. Gen. Stat. § 153A-311: Purposes for which districts may be established.

The board of commissioners of any county may define a county research and production service district in order to finance, provide, and maintain for the district any service, facility, or function that a county or a city is authorized by general law to provide, finance, or maintain. Such a service, facility, or function shall be financed, provided, or maintained in the district either in addition to or to a greater extent than services, facilities, or functions are financed, provided, or maintained for the entire county. (1985, c. 435, s. 1.)