N.C. Gen. Stat. § 115C-218.36
Prior to any application for any development approval under Chapter 160D of the General Statutes, the board of directors of a charter school shall inquire, in writing, of the public water system, public sewer system, or public water and sewer system, currently serving the site or closest to the site as to whether that public system has capacity to serve the proposed charter school facility. The public system shall respond to the board of directors within a reasonable time, not to exceed 30 days as to whether that public system has capacity to serve the proposed charter school facility. Unless the public system does not have capacity to serve the proposed charter school facility or is under a moratorium precluding expansion, the public system shall reserve the necessary capacity for the proposed charter school facility for 24 months from the date of the written inquiry from the board of directors. Upon costs associated with water and sewer infrastructure for the proposed charter school facility having been incurred by the board or an agent of the board, neither the public system nor a local government shall deny access to the public system in which capacity is reserved for the proposed charter school facility during the 24-month period.
N.C. Gen. Stat. § 115C-218.36