The sewer service charge system shall generate adequate annual revenues to pay the
expenses of annual operation and maintenance for the unified government's sewer system,
excluding the operation and maintenance expenses for the flood control facilities
being operated by the unified government. The sewer service charge system also shall
generate adequate annual revenues for replacement associated with equipment, accessories
or appurtenances which are necessary during the useful life of all publicly owned,
operated, and maintained wastewater treatment plants, and all municipal wastewater
pumping stations owned, operated, and maintained by the unified government.
