Wyo. Stat. § 41-3-758
The board may, in its discretion, at any time file a petition in the court, praying a judicial examination and determination of any power conferred hereby or by any amendment hereto or of any tax or assessment levied or of any act, proceeding or contract of the district, whether or not said contract shall have been executed, including proposed contracts for the acquisition, construction, maintenance and/or operation of works for the district. Such petition shall set forth the facts whereon the validity of such power, assessment, act, proceeding or contract is founded and shall be verified by the president of the board. Notice of the filing of said petition shall be given by the clerk of the court, under the seal thereof, stating in brief outline the contents of the petition and showing where a full copy of any contract or contracts, therein mentioned, may be examined. Said notice shall be served by publication in at least five (5) consecutive issues of a weekly newspaper of general circulation published in the county in which the principal office of the district is located, and by posting the same in the office of the district at least thirty (30) days prior to the date fixed in said notice for the hearing on said petition. Any owner of property in the district or person interested in the contract or proposed contract may appear and demur to or answer said petition at any time prior to the date fixed for said hearing or within such further time as may be allowed by the court; and the petition shall be taken as confessed by all persons who fail so to appear. The said petition and notice shall be sufficient to give the court jurisdiction and upon hearing, the court shall examine into and determine all matters and things affecting the question submitted, shall make such findings, with reference thereto, and render such judgment and decree thereon as the case warrants. Costs may be divided or apportioned among the contesting parties in the discretion of the trial court. Review of the judgment of the court may be had as in other similar cases, except that such review must be applied for within thirty (30) days after the time of the rendition of such judgment, or within such additional time as may be allowed by the court within thirty (30) days. The Code of Civil Procedure shall govern in matters of pleading and practice where not otherwise specified herein. The court shall disregard any error, irregularity or omission which does not affect the substantial rights of the parties.
W.S. 41-3-758