Cal. Health & Safety Code § 32300

Bonds may be issued by a district for the purpose of acquiring, maintaining, constructing, or altering work, or for the purpose of funding the district’s portion of the funding of a coinsurance plan between a hospital and the member of its attending medical staff, when, in either case, in the opinion of the directors, a special assessment would be inadvisable, and the expenses of such operations will be in excess of an amount which can reasonably be raised by the regular annual assessment for the running expenses of the district.