Vendor Registration

The Water Authority uses an online vendor registration and notification system called The Network. Registration is free regardless of company size. To register, visit The Network and follow the instructions provided. Video and written registration instructions are available in order to facilitate registration. Click here to find the appropriate NAICS code(s) for your business and click here for information about Small Business Administration size standards.

Once registered on The Network , you will have access to solicitation documents (e.g. Notices Inviting Bids, Requests for Proposals) that have been posted by the Water Authority and other participating public agencies. In addition, you will receive an automatic email notification when a solicitation that is related to the type of service/good you provide (based on your profile entered) is posted on The Network.

A free, interactive training video to facilitate registering on The Network is available at

Engineering construction solicitation documents are posted on eBidBoard in addition to The Network.


New Vendor Packet

NOTE: Only new vendors who receive contracts or purchase orders from the San Diego County Water Authority will need to fill out the Vendor Packet below. Please note that some browsers do not support viewing attachments in the file. We recommend you download the file and open outside of the browser to ensure proper viewing of the four documents contained in the packet. 

San Diego County Water Authority Vendor Packet

As directed by our General Manager, the San Diego County Water Authority accounts payable team is telecommuting for the foreseeable future.  To avoid delays in payment, complete the Authorization for Electronic Funds Transfer (EFT) included in the Vendor Packet and submit it with your Vendor Forms.

Please complete and return your vendor documents by one of the following methods:

E-mail address:

Fax Number:         (858) 522-6561

Mail Address:      Attn: Accounts Payable Team – Finance Department
                                San Diego County Water Authority
                                4677 Overland Avenue
                                San Diego, CA 92123-1233