Amends GS 113A-256, adding that the Clean Water Management Trust Fund (Fund) Board of Trustees must also develop grant criteria considering water supply availability and the public’s need for water resources adequate to sustain life and maintain public health, safety, and the economy. Makes conforming changes to GS 113A-253 (detailing Fund allocations), GS 113A-253.1 (annual appropriation to the Fund), and GS 113A-251 (purpose of the Fund) and provides for the preservation of land for water supply reservoirs. Makes clarifying changes.