At least one each: flush water closet, lavatory and
bathtub or shower, affording privacy and properly connected to water
and sewer systems approved by the Health Officer and in good working
condition, shall be supplied for each six persons or fraction thereof
residing within the rooming house, including members of the operator's
family whenever they share the use of said facilities, except that
in a rooming house where rooms are let to males only, flush urinals
may be substituted for not more than 1/2 of the required number of
water closets greater than one.