Cal. Gov. Code § 978.2
Bonds issued under this article constitute general obligations of the local taxing entity for the payment of both principal and interest of which all property in the local taxing entity subject to ad valorem taxation by the local taxing entity or subject to ad valorem assessment by the local taxing entity shall be taxed or assessed without limitation of rate or amount.
The board shall, at the time and in the manner provided by law for levying taxes or assessments, fix an ad valorem rate of tax or assessment sufficient to pay the principal of and interest on all bonds issued under this article as they become due. Such ad valorem taxes or assessments shall be in addition to all other taxes or assessments levied by the local taxing entity, and when collected shall be used for no purpose other than the payment of such bonds and the interest thereon.
Nothing in this section shall be construed to prohibit the use of other revenues of the local taxing entity for the payment of principal and interest on bonds issued under this article.
Ca. Gov. Code § 978.2