The water supply system of every building used in whole or in part for
dwelling purposes shall be furnished. The water supply system shall not be
cross-connected to any other water system or a sewerage system.
Every dwelling unit shall have supplied water heating facilities which
are properly installed, operated and maintained in a safe and good working
condition and are properly connected to the bathtub or shower, sink and lavatory
basin. Such water heating facilities shall be capable of heating water to
a temperature of 110° F. and capable of meeting normal demands at every
required outlet, even though the dwelling's heating facilities are not
in operation. All gas-fired water heaters shall. be vented to the outside.
Gas and liquid fuel water heaters are not permitted to be located in bedrooms.