The treasurer of a district shall be bonded in the amount set by the water resource board but the bond shall not be less than one thousand dollars. Other district employees shall be bonded in any amount set by the board. Every officer or employee of whom a bond is required shall be deemed bonded with the state bonding fund upon notice of that appointment given to the administrator of the fund by the secretary of the district. Upon notification of the assessment, the district treasurer shall remit the payment.