Md. Code, Environment § 9–672

(a) In Part VII of this subtitle the following words have the meanings indicated.

(b) “Shared facility” means a water system or sewerage system that serves:

(1) More than 1 lot;

(2) More than 1 single family residence or its equivalent; or

(3) A series of water systems or sewerage systems that each serve 1 lot.

(c) “Shared facility area” means the territory served by a shared facility.