Water-flush toilets in an enclosed lavatory with a system of sewage disposal approved by the Director of Health must be provided for the use of employees. Where food is consumed on the premises by patrons, separate lavatories must be provided for men and for women, except that where public seating capacity is 12 or fewer, as determined by the State Building Code, a single, unisex lavatory may be provided. Access to a public lavatory must not be by way of any portion of the food preparation area. The doors to all lavatories shall be equipped with automatic closing devices. No lavatory shall open directly off the kitchen, nor shall a lavatory be so located that flies have ready access from it to the food preparation area. The number, type and location of lavatories shall comply with the Building Code and the Public Health Code of the State of Connecticut.