Cal. Water Code § 8020

Within one month after the publication of the resolution or ordinance of intention, and by resolution or ordinance passed at a regular meeting by a vote of two-thirds of all its members, and approved by the executive of the city, the city council shall call a special election, and submit to the qualified voters of the city the proposition to incur a debt for any or all of the purposes mentioned in this chapter which have been determined to be demanded for the public good.