A rural authority may, with the approval of the Minister, constitute any part of their district a special purpose area for the purpose of charging thereon exclusively the expenses of works of sewerage, sewage disposal or water supply, or of any other works the expenses of which are declared by or under any enactment (including any enactment in this Act) to be special expenses.
Special drainage districts constituted under section two hundred and seventy-seven of the Public Health Act, 1875, or under the corresponding provisions of any earlier Act, shall be known as and styled special purpose areas, and references in any Act or other document to special drainage districts shall be construed accordingly.
The Minister may by order vary or dissolve any special purpose area, whether constituted under this Act or as mentioned in the last preceding subsection.