California Code, Health and Safety Code - HSC § 32321

(a) Any ordinance subject to Section 32320 shall be published after adoption once a week for two successive weeks, commencing within 15 days after adoption, in a newspaper of general circulation published in the district, or if there is none, in the newspaper of general circulation published nearest to the district.  If there is no newspaper of general circulation published in the district, the ordinance shall also be posted in three public places in the district for two succeeding weeks.

(b) The board of directors of the district may introduce and enact an ordinance at any regular or adjourned regular meeting by the approving votes of a majority of all its members.  The electors of the district shall have the right to petition for referendum on an ordinance pursuant to Article 2 (commencing with Section 9140) of Chapter 2 of Division 9 of the Elections Code, except that all computations referred to in those sections, and officers of the county mentioned in those sections, shall be construed to refer to comparable computations and officers of the district.  For the purpose of the section, the term “electors” means the electors of territory entitled to vote at elections for the members of the board of directors.