Cal. Water Code - WAT § 47930. Section 47930.
The board, by resolution, in lieu of enforcing collection of delinquent assessments pursuant to Chapter 5 (commencing with Section 46670) of this part, may include in the resolution provided by Section 47904 an order directing that all delinquent assessments be transferred to the county tax rolls for collection.
On receipt of the certified copy of the resolution containing such order, the county treasurer shall forthwith close the delinquent rolls and transfer the same to the county auditor whose duty it shall be to compute the amount of the delinquency, with interest and penalties, and add such amounts chargeable against the
various parcels of land in a column on the county assessment roll designated, “delinquent assessments”, such entry to be made in dollars and cents and to include interest to the date that the payments on the county assessment roll are due.