Section 113992 Of Article 1. Protection From Contamination From California Health And Safety Code >> Division 104. >> Part 7. >> Chapter 4. >> Article 1.

. (a) Produce shall be thoroughly washed in potable water to remove soil and other contaminants before being cut, combined with other ingredients, cooked, served, or offered for human consumption in ready-to-eat form, except as specified in subdivision (b) and except when intended for washing by the consumer before consumption.
  (b) Chemicals used to wash or peel produce shall meet the requirements specified in 21 C.F.R. 173.315.