Cal. Health & Saf. Code § 32130.1
A district is also authorized, when funds are needed to meet current expenses of maintenance and operation, to borrow money on certificates of indebtedness or other evidence of indebtedness in an amount not to exceed five cents ($0.05) on each one hundred dollars ($100) of assessed valuation of the district, the certificates of indebtedness to run for a period not to exceed five years and to bear interest not to exceed the rate prescribed in Section 53531 of the Government Code.
All certificates of indebtedness or other evidence of indebtedness shall be issued after the adoption by a three-fifths vote of the board of directors of the district of a resolution setting forth the necessity for the borrowing and the amount of the assessed valuation of the district and the amount of funds to be borrowed thereon. All certificates of indebtedness or other evidence of indebtedness shall be offered at public sale by the board of directors of the district after not less than 10 days advertising in a newspaper of general circulation within the district and if no newspaper of general circulation is printed within the district, then in a newspaper of general circulation within the county in which the district is located. Each sale shall be made to the bidder offering the lowest rate of interest or whose bid represents the lowest net cost to the district. However, the rate of interest shall not exceed the rate prescribed in Section 53531 of the Government Code.
The certificates of indebtedness or other evidences of indebtedness shall be signed on behalf of the district by the presiding officer and attested by the secretary of the board of directors of the district. The board of supervisors of the county in which the district lies shall, at the time of fixing the general tax levy, sometimes called the annual assessment or regular annual assessment for the district, and in the manner for the general tax levy provided, levy and collect annually each year until the certificates of indebtedness or other evidences of indebtedness are paid or until there is a sum in the treasury set apart for that purpose sufficient to meet all sums coming due for principal and interest on the certificates of indebtedness or other evidences of indebtedness, tax sufficient to pay the interest on the certificates of indebtedness as the same become due and also, to constitute a sinking fund for the payment of the principal thereof at maturity. The tax shall be in addition to all of the taxes levied for district purposes and shall be placed in a certificate of indebtedness, interest and sinking fund of the district and, until all of the principal of the interest and certificates of indebtedness is paid, the money in the fund shall be used for no other purpose than the payment of the certificates of indebtedness and accruing interest thereon.
Ca. Health and Saf. Code § 32130.1