California Code, Health and Safety Code - HSC § 13930

The district board shall adopt a resolution prescribing the form and denomination of the bonds and any coupons. The resolution shall specify the dates on which all or any part of the principal shall become due and payable. The payment of the first installment or principal may be deferred for a maximum period not to exceed five years from the date on which the district board issues the first bonds or first bonds in each series.