California Code, Health and Safety Code - HSC § 32127.5

(a) Upon the adoption of a resolution of the board of directors of the district so providing, all funds on hand in the treasury of the district may, be paid over to the county treasurer of the county in which the district was organized, in which case and from and after the date of the adoption of such resolution the functions of the district treasurer shall be performed by the county treasurer. Except as to principal and interest of bonds, moneys in the treasury of the district shall be paid out by the county treasurer for purposes of the district upon warrants issued by the county auditor on orders signed by the president of the district and countersigned by the secretary of the district.

(b) At any time, the district board may, by resolution, reestablish the office of district treasurer and, upon receipt of a copy of such resolution, notwithstanding any other provision of law, the county treasurer shall transfer all funds of the district to the district treasurer.