Wash. Rev. Code § 87.03.790
The court shall fix the time for the hearing of said petition, and shall order the clerk of the court to give and publish a notice of the filing of said petition. The notice shall be given and published in the same manner and for the same length of time that a notice of a special election provided for by this chapter to determine whether the bonds of said district shall be issued is required to be given and published. The notice shall state the time and place fixed for the hearing of the petition, and the prayer of the petition, and that any person interested in the organization of said district or in the proceedings for the issue or sale of said bonds or refunding bonds or for the authorization of contract with the United States, or the state of Washington, or any other contract, may, on or before the day fixed for the hearing of said petition, demur to or answer said petition. The petition may be referred to and described in said notice as the petition of the board of directors of irrigation district (giving its name) praying that the proceedings for the organization of said district or the proceedings for the issue and sale of the bonds of said district or for the authorization of contract with the United States, or the state of Washington, or other contracts, may be examined, approved, and confirmed by said court.
RCW 87.03.790
Notice of a special election on bonds: RCW 87.03.200.
Official paper for publication: RCW 87.03.020.