(1) Separation.

(a) No toilet room must have direct communication with any room in which unwrapped food products are prepared, stored, handled, or sold, unless separated by a self-closing door maintained in operating condition.

(b) Separate toilet facilities must be provided for men and women, and each toilet room must be plainly marked by a sign reading "men" or "women." However, where toilet rooms will be occupied by no more than one person at a time, can be locked from the inside, and contain at least one water closet, separate toilet rooms for each sex need not be provided. Where a single occupancy room has more than one toilet, only one of them may be counted for the purpose of the table in WAC 480-66-470.

(c) There must be no direct connection between toilet rooms for men and women. Each must have a separate entrance, and each entrance door must have an automatic closing device maintained in operating condition.

(2) In toilet rooms containing more than one water closet, each water closet must be in an individual compartment.

(3) Every toilet room must be adequately ventilated.

(4) All toilet facilities must be clearly lighted at all times during working hours.

(5) Every toilet room other than privies must be kept adequately heated.

(6) All windows, ventilators, and other openings, must be screened to prevent the entrance of insects. Toilet rooms must be kept free of insects and vermin.