Upon the completion or other termination of the projects for which the district is organized and upon the payment and retirement of all outstanding bonds and obligations of the district, the district shall be wound up and dissolved. The secretary shall or any member of the board of directors may call a meeting for the dissolution of the district. If a meeting for dissolution is not called the board of supervisors of any county within the district may demand the calling of such meeting and the dissolution of the district. Notice of such meeting shall be given to each member county and contributing political subdivision and public corporation.