Doing Business with Contracts Administration

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Doing Business with OCSD

Firms desiring to do business with the Orange County Sanitation District (OCSD) must complete the online registration process.  

To register as a Vendor, visit the information page, then select the “New Vendor Registration” to complete the registration process. (We recommend that you register at least one additional contact person’s email address in the box entitled “Alternate Email” to receive notices in case the main contact is unavailable.) 

For technical assistance with the vendor registration process, please contact

Business Hours

Business Hours are from 7:30am to 4:30pm, Monday through Thursday and 8:00 am to 3:30pm on Fridays. Call the Contracts Administration team at (714) 593-7597.  

Design, Architecture and Other Engineering Services  

The Contracts Administration Team procures design consultants, architects, as well as other engineering services by utilizing Requests for Qualifications and Requests for Proposals. This team is also responsible for the procurement of public works projects, which comply with the California Public Contract Code.  All procurements follow the Orange County Sanitation District’s Purchasing Ordinance and any applicable government regulations.  

Public Works Construction Bid Practices

California Contract Code Section 20780 et seq. provides that expenditures for public works projects exceeding $35,000 shall be contracted for and let to the lowest responsible bidder after notice. OCSD’s contracting practices for public works construction shall be in accordance with California statutes, assuring that business is conducted in a fair, ethical, and competitive manner. OCSD’s public works construction contracting for expenditures exceeding $35,000 is accomplished through the method of Invitations for Bid (IFB). IFB is the procurement practice of soliciting sealed bids. Award is based on the lowest responsive, responsible bidder.

Disadvantaged Business Enterprise (DBE) Program

OCSD may participate in federal funding for projects. These projects may have requirements for making good faith efforts to contract with DBE for-profit, small businesses. Specific funding may require use of some or all DBE categories.  

How to Avoid Bid/Proposal Rejection 

  •  Always submit bids or proposals before the date and time stated in the Solicitation documents.
  • Sealed bids and proposals shall be date/time stamped by the Administration Building Receptionist or by a Contracts, Purchasing & Materials Management Division representative.
  • Late submittals will not be accepted and the bidder/proposer has the sole responsibility to ensure that the bid or proposal is delivered before the date and time due.
  • Read the bid or proposal documents carefully. 
  • Enclose all required submittals.