Section 21565 Of Article 121. Metropolitan Water District From California Public Contract Code >> Division 2. >> Part 3. >> Chapter 1.5. >> Article 121.

. Whenever any work is not to be done by the district itself by force account, and the amount involved shall be twenty-five thousand dollars ($25,000) or more, the board shall provide for the letting of contracts to the lowest responsible bidder, after publication of notices inviting bids, but subject to the right of the board to reject any and all proposals.