California Code, Public Resources Code - PRC § 9523

The treasurer shall pay out money of the district only upon warrants approved by the county auditor, drawn upon order of the board of directors signed by the president and attested by the secretary.

Whenever two or more districts enter into a joint powers agreement, or whenever a district enters into a joint powers agreement with other agencies of the state, the agency or entity administering the agreement shall determine where its funds shall be deposited and how such funds shall be paid out.