Water Code § 51616.2
ARTICLE 1. Delinquency Sales on Unbonded Assessments
If a call on an assessment on any parcel sold to the county treasurer as trustee for the district becomes delinquent during the redemption period, the parcel shall be again sold as provided in this article, but only to the county treasurer as trustee for the district, for the amount of the subsequent delinquent installment, interest, and penalty.