California Code, Streets and Highways Code - SHC § 35468

If no money is available for the payment of an assessment of public property, the board or officer whose duty it is to levy taxes for the owner of the public property shall include in the next tax levy an amount, in addition to money for all other purposes, sufficient to pay the assessment and the interest thereon from the date the assessment is recorded, at the rate established for the bonds.  When the money received from the tax levy is available, the assessment and interest shall be paid by the officer or board having charge of the disbursement of the funds of the owner.

Any duty imposed by this section and Section 35467 may be enforced by action, mandamus, or other proceeding.