Cal. Wat. Code § 71632
The ordinance fixing a standby assessment or availability charge shall be adopted by the board pursuant to the notice, protest, and hearing procedures in Section 53753 of the Government Code and only after adoption of a resolution setting forth the particular schedule or schedules of charges or assessments proposed to be established by ordinance and after a hearing on said resolution.
If the procedures set forth in this section as it read at the time a standby assessment or availability charge was established were followed, the board may, by ordinance, continue the charge pursuant to this article in successive years at the same rate. If new, increased, or extended assessments are proposed, the board shall comply with the notice, protest, and hearing procedures in Section 53753 of the Government Code.
Ca. Water Code § 71632