Cal. Health & Safety Code § 33840

Immediately after the levy, but in all cases before July 15th, a certified copy of the diagram and assessment shall be filed with the county auditor. The county auditor shall enter the amounts of the respective assessments on the county tax roll opposite the respective parcels of property. Immediately upon such recording, each of such assessments shall be a lien upon the property against which it is made and shall only be discharged by payment of the assessment and, if applicable, penalties, costs, or other charges resulting from delinquency in the payment of the assessment.