The special uses within the Wellhead Protection Overlay District shall be those of the underlying zoning districts subject to any more restrictive regulations of this Overlay District.
(a) Sanitary landfills, drywells and the filling in of land with demolition debris or other non-approved matter, and junkyards, are prohibited.
(b) Commercial or other facilities for the washing of vehicles or equipment shall be permitted only if the wastewater from such facilities is entirely channeled into the sanitary sewer system.
(c) Wastewater treatment plant discharges are permitted when subject to discharge limitations prescribed by the appropriate state and national regulatory agencies.
(d) If a nonconforming use of any land, building or structure is discontinued for six months or more, any further use shall be in conformity with this District.