To ensure that the handling and processing of milk, fluid milk and dairy products is conducted in a sanitary environment, the State Department of Agriculture shall prescribe minimum standards of construction for dairy products plants and physical facilities of a distributor or producer-distributor, including but not limited to standards for:
(1) Floors, walls, ceilings.
(2) Doors and windows.
(3) Lighting and ventilation.
(4) Toilet and lavatory facilities.
(5) Water supply.
(6) Separation and partitioning of rooms for carrying on the several handling, processing and storage functions.