All rooms in which food or drink is prepared, or in which utensils are washed, shall be lighted so that a minimum of 50-foot candles of light is available on all work surfaces. Shielding to protect against broken glass falling into food shall be provided for all artificial lighting sources in preparation, service, and display facilities.

Toilet rooms shall be completely enclosed and shall be vented to the outside air or mechanically ventilated. None of the operations connected with food establishments shall be conducted in any room used as living or sleeping quarters.