The words, terms and phrases listed below, for the purpose of this chapter, shall be defined as follows:
Any artificially constructed swimming pool or tank maintained and operated by a private group or club or limited to residents of a block, district, neighborhood, community or other specified area of residence for the use of members or their guests.
Any artificially constructed swimming pool or tank, having a depth of less than 18 inches and not more than 15 feet across in any direction, established or maintained by any individual, association, firm or corporation upon any premises as an appurtenance to a residence occupied by not more than three families for the use of the occupants of such residence or their guests.
Any artificially constructed permanent swimming pool or tank, having a depth of 18 inches or greater, established or maintained by any individual, association, firm or corporation upon any premises as an appurtenance to a residence occupied by not more than three families for the use of the occupants of such residence or their guests.