Every building, room, basement, or cellar occupied or used for the production, preparation, manufacture, packing, canning, sale, or distribution of food shall have convenient toilet or toilet-rooms, separate and apart from the room or rooms where the process of production, preparation, manufacture, packing, canning, selling, or distributing is conducted.
Source:
Section 111995, https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=HSC§ionNum=111995..