Cal. Food & Agr. Code § 8609
If a consolidated district includes parts of two or more counties, the repository of all money of the district shall be the county treasury of the county in which is located the largest area of the district. Money collected for the use of the district in any other county in which a part of the district is located shall be transferred by the county treasurer upon warrant of the county auditor of the county in which the money was collected to the county treasurer of the county serving as repository for the district, in the same manner as prescribed for the disbursement of money held for a local district. Money derived from any county in which the district is located may be expended in any part of the district for the purposes authorized by this part, notwithstanding any other provision of law limiting the expenditure of any such money to a specific area or county.
Ca. Food and Agric. Code § 8609