California Code of Regulations
Title 8 - Industrial Relations
Division 1 - Department of Industrial Relations
Chapter 4 - Division of Industrial Safety
Subchapter 7 - General Industry Safety Orders
Group 2 - Safe Practices and Personal Protection
Article 9 - Sanitation
Section 3363 - Water Supply

(a) Potable water in adequate supply shall be provided in all places of employment for drinking and washing and, where required by the employer of these orders, for bathing, cooking, washing of food, washing of cooking and eating utensils, washing of food preparation or processing premises, and personal service rooms. (Title 24, Part 5, Section 5-1001; Exception No. 2: (b))

(b) All sources of drinking water shall be maintained in a clean and sanitary condition. Drinking fountains and portable drinking water dispensers shall not be located in toilet rooms. (Title 24, Part 5, Section 5-1001; Exception No. 2: (c))

(c) Portable drinking water dispensers shall be equipped with a faucet or drinking fountain, shall be capable of being tightly closed and shall be otherwise designed, constructed and serviced so that sanitary conditions are maintained. Such dispensers shall be clearly marked as to their contents.

(d) The dipping or pouring of drinking water from containers, such as from barrels, pails or tanks, is prohibited regardless of whether or not the containers are fitted with covers.

(e) The common use of a cup, glass or other vessel for drinking purposes is prohibited.

(f) Nonpotable water shall not be used for drinking, washing, or bathing, washing of clothing, cooking, washing of food, washing of cooking or eating utensils, washing of food preparation or processing premises or other personal service rooms. (Title 24, Part 5, Section 5-1012 (a))

(g) Outlets for nonpotable water, such as water for industrial or fire-fighting purposes, shall be posted in a manner understandable to all employees to indicate that the water is unsafe and shall not be used for drinking, washing, cooking or other personal service purposes. (Title 24, Part 5, Section 5-1012 (c))

(h) Nonpotable water systems or systems carrying any other nonpotable substance shall be installed so as to prevent backflow or back-siphonage into a potable water system. (Title 24, Part 5, Section 5-1012 (b))