(1) Drinking water facilities shall be installed and maintained so as to provide fresh and pure drinking water. When ice is used for water cooling purposes, the containers shall be so arranged that the drinking water will not come in contact with the ice. Containers used for storing or dispensing potable water shall be kept clean at all times and shall be subjected to effective bacterial treatment as often as may be necessary to prevent the contamination of the water so stored and dispensed.

(2) A heating facility shall be maintained and shall be capable of producing a temperature of at least 65 degrees Fahrenheit in a standard caboose and 53 degrees in the locomotive cab.

(3) Weather stripping or weatherproof sash shall be installed and maintained at all windows and doors and other openings, to protect against weather and seepage of dirt and dust.

(4) Toilets will be installed in each caboose of the flush, chemical, incinerating, or other effective type and where toilets are installed on cabooses or locomotives, they shall be maintained in a clean and sanitary condition.