(a) Regulation. Every eating and drinking establishment shall be provided with adequate and conveniently located toilet facilities for its employees. Separate toilet rooms shall be provided for each sex whenever both males and females are employed. The doors of all toilet rooms shall be self-closing. Toilet rooms shall be kept in clean condition, in good repair and well lighted and ventilated. Hand washing signs shall be posted in each toilet room used by employees or in the kitchen.
(b) Satisfactory compliance.
(1) Toilet facilities at the rate of one toilet for every twenty persons or fraction thereof are provided for employees. Where both males and females are employed, toilets for each sex are provided. Such toilet facilities comply with the Plumbing Code of the city and are located on the same premises as the establishment, except in Class II and Class III itinerant establishments, in which case toilets shall be located within a reasonable distance and be accessible during all hours of operation.
(2) The toilet room doors are provided with springs or checks to make them self-closing.
(3) The toilet rooms and fixtures are kept clean, sanitary and in good repair. The floor of the toilet room is constructed of material which is impervious to water. Wood floors are acceptable only if they are smooth and have been treated with filling and sealing compounds. In all establishments hereafter constructed, the joints between the walls and floor of the toilet room shall be covered and baseboard shall be omitted.
(4) The toilet room is lighted in accordance with paragraph (3) of subsection (b) of section 6-11, and is ventilated to the outside air either by window, air shaft, air duct or mechanical ventilation in accordance with paragraphs (1) and (2) of subsection (b) of section 6-12.
(5) Durable, legible signs are posted conspicuously in each toilet room or in the kitchen, directing employees to wash their hands before returning to work. Such signs may be stencilled on the wall to prevent removal.