Where a public sanitary sewer system is not reasonably accessible in the determination of the City Engineer, the subdivider shall provide the following:
(a) A central treatment plant for the lots, provided that such central treatment plan shall be installed in accordance with all Ohio Environmental Protection Agency and City requirements.
(b) Pumping stations may be provided, together with properly sized force mains, as determined by the City Engineer, to pump sewage to an adequate existing sewer. Pump stations shall meet all Ohio Environmental Protection Agency and City requirements.
(c) Lots served by individual disposal systems shall not be permitted.