Streets and Highways Code § 5451
CHAPTER 18.1. Collecting the Assessment on the Tax Roll
Said resolution shall contain a description of the properties so assessed, the amount of such assessments, together with interest thereon from the date of filing the original list of unpaid assessments and at the rate of 1 percent per month to the next succeeding thirty-first day of December of the tax year for which such roll shall have been prepared, and the total amounts of principal and interest on each property.