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Purchasing & Support Services

Register Online to Become a Vendor

San Joaquin County uses an online bid management system called Public Purchase. Register with Public Purchase if you want to do business with the County.

Register (FREE) with Public Purchase:

Why Register?
By registering with Public Purchase, you will automatically be notified when bid opportunities of interest, become available.

How to Register?
This registration is a Two-Step process.

Step One:

Create an account for your organization with Public Purchase. If you are already registered with Public Purchase, please go to Step Two.

Step Two:

Link your Public Purchase account to San Joaquin County.

Confirming Email:

When your registration with Public Purchase is activated, you will receive a confirmation email from Public Purchase. Using the link provided in the email, log in using your username and password, then click on the "Tools" tab on the top right hand side of the screen. Type in "San Joaquin County" and click on search then click "Register with Agency" on the right hand side of the San Joaquin County, Purchasing & Support Services Department.

San Joaquin County, Purchasing & Support Services Department requires vendors to select the NIGP commodity code(s) that relate to your business so you can receive email notifications of future bid opportunities that match the code(s) you selected.

Public Purchase provides government agencies and their vendors with a comprehensive and easy to use web based eProcurement system. The Public Purchase eProcurement system is designed exclusively for use by government agencies and their vendors and is compliant with all Federal and State regulations, which set forth the required procedures for government agency purchasing.

This eProcurement system provides you with automatic notification and the ability to download bids at no charge.

Problems Registering?

If you have any problems with this process please contact Public Purchase at

Register with Public Purchase (click on the FREE REGISTRATION link):

Materials, supplies and equipment delivered or services performed without a valid
Purchase Order Number or a properly signed Agreement will not be accepted or paid by the County.