Itinerant eating and drinking establishments shall comply with the following provisions of this article:
(a) Class I establishments shall comply with sections 6-20, 6-21, 6-22, 6-23 and 6-24. Fixed premises or mobile units shall be kept clean and free of litter or rubbish.
(b) Class II establishments shall comply with sections 6-11, 6-16, 6-17, 6-18, 6-19, 6-20, 6-21, 6-22, 6-23, 6-24 and 6-25. Premises shall be kept clean and free of litter or rubbish, and insects and rodents shall be kept under control. Class II establishments shall provide adequate and conveniently located toilet facilities for employees. If permanent toilet facilities are not available, temporary facilities shall be constructed and maintained according to the specifications of the deputy state health officer. Class II establishments shall provide an ample supply of potable water, as specified by the deputy state health officer. Class II establishments shall also provide adequate and convenient hand-washing facilities as specified by the deputy state health officer.
(c) Class III establishments shall meet all requirements of this article, with the exception of section 6-13.
(d) Class IV itinerant establishments shall meet all the requirements of this article, with the exception of sections 6-13, 6-14, 6-17 and 6-19. Class IV itinerant establishments shall provide an adequate supply of potable water under pressure. The waste receiving tank shall be capable of containing all wastes from the mobile units. Plumbing shall be so installed and maintained to prevent contamination of food, drink, food bearing surfaces and equipment through backflow. All wastes shall be held and disposed of in a manner satisfactory to the deputy state health officer.