Cal. Pub. Util. Code § 101220

The district may borrow money for the purpose of defraying the expenses of the district lawfully incurred after the commencement of the fiscal year, but prior to the time moneys from the tax levy for the fiscal year are received by the district, in a sum which shall not exceed fifteen cents ($0.15) on each one hundred dollars ($100) of assessed valuation of taxable property in the district at the time the moneys are borrowed, and may evidence such borrowing by notes bearing interest at a rate not to exceed 7 percent per annum. The notes shall be payable from the tax levy from the then current fiscal year, which levy shall contain a sum sufficient to provide for the payment of the notes and the interest thereon. The form of the notes, and the proceedings relating to their issuance and sale, shall be governed by the applicable provisions contained in Article 7 (commencing with Section 53820), Chapter 4, Part 1, Division 2, Title 5 of the Government Code.