A. Acceptable types of systems. The DEVELOPER shall provide a water supply and distribution system to service the proposed SUBDIVISION or LAND DEVELOPMENT through one (1) of the following methods, listed in their order of preference:
1. Public water supply.
2. Community water supply.
3. On-lot water supply.
B. Public water supply. Connection of a public water supply system shall be required where such a system can feasibly be provided to the proposed SUBDIVISION or LAND DEVELOPMENT tract and where the capacity of such a system can adequately fulfill the water supply demands of the proposed development. A distribution system shall be designed to furnish an adequate supply of water to each lot.
C. Community water supply. Where a public water supply system cannot feasibly be provided to the proposed SUBDIVISION or LAND DEVELOPMENT, where the average residential lot size is to be less than a size necessary to accommodate both a septic system and on-site water or where a public water supply system is scheduled to serve the proposed SUBDIVISION or LAND DEVELOPMENT area within ten (10) years, a community water supply system will provided by the DEVELOPER if possible. If such a system is provided, it shall be approved by the Pennsylvania Department of Environmental Protection, and suitable agreements shall be established for the ownership and maintenance of the system. Also, such a system shall be designed and constructed in a manner that would permit adequate connection to a public water supply system in the future. Fire hydrants shall be provided in all community water supply systems where said system is adequate to provide fire protection.
D. On-lot water supply. Where individual on-lot water supply systems are to be utilized, they shall conform to established criteria set forth for on-lot water supply systems. However, if on-site sewage disposal is to be permitted, on-lot water supply shall be permitted only where approved by the Allegheny County Health Department and/or the Pennsylvania Department of Environmental Protection.