California Code, Water Code - WAT § 51647

If no redemption is made within one year, the treasurer, upon demand and surrender of the certificate of sale, shall execute to the purchaser, his heirs or assigns, or to himself as trustee of the district if the property was sold to him, a deed to the parcel described in the certificate, conveying the parcel free and clear of all encumbrances except any portion of any reclamation assessment remaining unpaid at the date of the sale.