Enacts new GS 130A-86 allowing a county board of commissioners in counties that have a population in excess of 100,000 to dissolve a sanitary district upon the six specified conditions, including that both the county and at least one city in the county currently provide residents with water and sewer services; prior to the dissolution, the board of commissioners adopts a plan providing for continued operation and provision of all services previously being performed or rendered to the District; and the dissolution of the District is approved by the voters of the county in a referendum.