All vendors wishing to do business with Special Districts or any County of San Bernardino department must register with the County. Information on how to register can be found at the County Purchasing Department’s website
Once this is completed you will have to send in a copy of your W9 by fax to 909-386-8839 or mail to:
San Bernardino County Special Districts Department
222 W Hospitality Ln,2nd Floor
San Bernardino, CA 92415