The installation of individual water supply or individual sewerage systems shall be subject to the following requirements:
A. An individual water supply or individual sewerage system may not be permitted to be installed where an adequate community water or sewerage facility is available. If an existing community water or sewerage facility is inadequate or is not available, an interim individual water and sewerage system may be used as set forth in §B(1), (2), and (3), of this regulation.
B. Interim individual water supply and sewerage systems may be permitted to be installed in any portion of the county, except where otherwise prohibited, where community systems will be programmed for construction within the S-1-2, 3 and 4 and W-1-2, 3 and 4 service categories provided that:
(1) The interim systems are adjudged by the local health department to be adequate, safe, and in compliance with pertinent State and local regulations, including minimum lot ownership as set forth in COMAR 26.04.03.02 and .03;
(2) Permits for the interim systems shall bear a notice regarding the interim nature of the permit and stating that connection to a future community system shall be made within 1 year or less after the system becomes available;
(3) If interim systems are used, provisions shall be made, whenever possible, to locate the systems so as to permit connection to the public facilities in a most economical and convenient manner.
C. Individual water supply or sewerage systems, not of an interim nature, shall be permitted to be installed in any portion of the county designated as S-5 and 6, and W-5 and 6 where community systems are not planned. The installations shall be governed by the regulations under COMAR 26.04.02 and 26.04.03 as minimum requirements.