The surety required on any bond required to be given by this chapter may be a surety or bonding company approved by the board of supervisors and the bond shall be made payable to the district by its corporate name, in which name all suits shall be instituted and prosecuted. All penalties herein named shall be payable to and recoverable by the district. All bonds required by this chapter shall cover defaults of deputies, clerks or assistants of the officers appointing them.