Health and Safety Code § 4614.2
ARTICLE 2a. Formation of Districts in Two or More Municipal Corporations and Also in Unincorporated Territory
Any city may initiate proceedings for the formation of a district and the making of improvements pursuant to this article whenever the governing body of such city determines that it is desirable that a district be organized pursuant to this article. Except as otherwise provided in this article, the procedure for the formation of a district pursuant to this article shall be the same as the procedure which is provided in this chapter where the district is within a single city.