Cal. Water Code § 75461

The district shall issue warrants for the amount of the project assessment, which warrants shall be made payable in the amount and at times corresponding substantially to the payments of the installments of the project assessment, plus any money to be paid from funds secured by assessments for general district purposes as provided in Section 75411, and which warrants shall bear interest at such rate of interest as may have been fixed in the levy of the project assessment.