California Code, Health and Safety Code - HSC § 5056

After rates are fixed pursuant to this article, any person may pay such rates under protest and bring an action against the governing body in the superior court to recover any money which the governing body refuses to refund. Payments made and actions brought under this section, shall be made and brought in the manner provided for the payment of taxes under protest and actions for refund thereof in Article 2, Chapter 5, Part 9, Division 1 of the Revenue and Taxation Code,  1 insofar as those provisions are applicable.