Cal. Food & Agr. Code § 35925
A county milk commission shall certify milk, including unpasteurized milk, for any applicant for certification whose milk complies with the rules, regulations, and standards for production, distribution and sale of milk adopted by the commission and prescribed in this code, irrespective of whether the milk is produced in the county in which the commission is located or in a contiguous county, so long as there is not a milk commission located in such a contiguous county. Provided, however, that the power of a milk commission to certify milk produced in the contiguous county shall terminate at such time as a milk commission is created in such contiguous county.
Nothing in this section shall affect any milk inspection, including an approved milk inspection service pursuant to Chapter 4 (commencing with Section 33051) of this part or any other inspection, for milk which is produced in such contiguous county and certified by the commission.
Ca. Food and Agric. Code § 35925