Cal. Wat. Code § 12878.6
If, within 30 days after conclusion of the hearing held pursuant to Section 12878.4 of this code, the governing body of the local agency has not given assurances satisfactory to the board or department that the said local agency will correct the deficiencies and maintain and operate the project works in accordance with the standards established by the federal regulations, or that such local agency does not desire to continue to operate and maintain such unit, or that there is no such local agency obligated to so maintain and operate such unit, the board or department shall establish the amount of money necessary to maintain the unit during the current and ensuing fiscal year and shall proceed with the formation of a maintenance area in accordance with the provisions of this chapter.
Ca. Water Code § 12878.6