GOV §61052: (a) Except as provided by Section 61053, the county treasurer of the principal county shall be treasurer of the district and shall be the depositary and have the custody of all of the district’s money

(a) Except as provided by Section 61053, the county treasurer of the principal county shall be treasurer of the district and shall be the depositary and have the custody of all of the district’s money. (b) All claims against a district shall be audited, allowed, and paid by the board of directors by warrants drawn on the county treasurer. (c) As an alternative to subdivision (b), the board of directors may instruct the county treasurer to audit, allow, and draw his or her warrant on the county treasury for all legal claims presented to him or her and authorized by the board of directors. (d) The county treasurer shall pay the warrants in the order in which they are presented. (e) If a warrant is presented for payment and the county treasurer cannot pay it for want of funds in the account on which it is drawn, the treasurer shall endorse the warrant, “NOT PAID BECAUSE OF INSUFFICIENT FUNDS” and sign his or her name and the date and time the warrant was presented. From that time until it is paid, the warrant bears interest at the maximum rate permitted pursuant to Article 7 (commencing with Section 53530) of Chapter 3 of Part 1 of Division 2.