Cal. Wat. Code § 25330.1
In the case of any district described in Section 20560.2 with respect to construction bonds issued for purposes of financing the works described in that section, notwithstanding Section 25327, the board shall give notice of sale of any bonds payable solely from revenue which are to be sold at public sale by publication in a newspaper of general circulation in the county not less than five days prior to the date of sale in the manner as the board may prescribe. Notwithstanding Section 25328, the notice shall state that sealed bids for the purchase of the bonds will be received at the place specified for that receipt, which need not be at the district office, until the day and hour specified by the board.
Notwithstanding Section 25329, at the time specified, the bids for the bonds shall be opened by the board or, if so determined by the board, shall be opened by an authorized member or officer of the board and referred to the board.
Notwithstanding Section 25330, a bid for the bonds need not be accompanied by a certified check for at least 2 percent of the amount of the bid if so determined by the board of the district, but no bid shall be accepted which is not accompanied by a certified or cashier's check for at least 1 percent of the amount of the bid as determined by the board.
Ca. Water Code § 25330.1