Colo. Rev. Stat. § 25-4-105
Every such building, room, basement, enclosure, or premises occupied, used, or maintained for the production, preparation, manufacture, canning, packing, storage, sale, or distribution of such food shall have adequate and convenient toilet rooms or lavatories. The toilet rooms shall be separate and apart from the rooms where the process of production, preparation, manufacture, packing, storing, canning, selling, and distributing is conducted. The floors of such toilet rooms shall be of cement, tile, wood, brick, or other nonabsorbent material and shall be washed and scoured daily. Such toilets shall be furnished with separate ventilating flues and pipes discharging into soil pipes or shall be on the outside of and well removed from the building. Lavatories and washrooms shall be maintained in a sanitary condition.
C.R.S. § 25-4-105