This subsection shall not apply:
"Capable public utility." A public utility which regularly provides the same type of service as the small water utility or the small sewer utility to 4,000 or more customer connections, which is not an affiliated interest of the small water utility or the small sewer utility and which provides adequate, efficient, safe and reasonable service. A public utility which would otherwise be a capable public utility except for the fact that it has fewer than 4,000 customer connections may elect to be a capable public utility for the purposes of this section regardless of the number of its customer connections and regardless of whether or not it is proximate to the small sewer utility or small water utility to be acquired.
"Small sewer utility." A public utility which regularly provides sewer service to 1,200 or fewer customer connections.
"Small water utility." A public utility which regularly provides water service to 1,200 or fewer customer connections.
66 Pa.C.S. § 529