Hearing - findings - when action barred

(1) On the date fixed for any hearing or at any adjournment thereof, the governing body or governing bodies of each member of the combination shall ascertain, from the tax rolls of where the district is located, the total valuation for assessment of the taxable real and personal property in the service area. If it appears that said petition is not signed in conformity with this article, the petition shall be dismissed and the cost adjudged against those executing the bond or depositing the cash filed to pay such costs. Nothing in this section shall prevent the filing of a subsequent petition for a similar district. (2) The findings of the governing body or governing bodies upon the question of the genuineness of the signatures and all matters of fact incident to such determination shall be final and conclusive. (3) Prior to the organization of the district, the governing body or governing bodies may exclude property from the service area or boundaries of the district if deemed to be in the best interests of the district. (4) If it appears that an organization petition has been duly signed and presented in conformity with this article, that the allegations of the organization petition are true, and that the types of services to be provided by the proposed district are those services that best satisfy the purposes set forth in this article, the governing body or bodies, upon the completion of the hearings, shall by ordinance, resolution, or contract adjudicate all questions of jurisdiction and may, exercising discretion, declare the district organized, describe the boundaries and service area of the district, and give it the corporate name specified in the petition by which, in all subsequent proceedings, it shall thereafter be known. (5) Such resolution, ordinance, or contract shall finally and conclusively establish the regular organization of the district against all persons unless an action, including an action for certiorari review, attacking the validity of the district is commenced in a court of competent jurisdiction within sixty days after the effective date of such resolution, ordinance, or contract. Thereafter, any such action shall be perpetually barred. The organization of said district shall not be directly or collaterally questioned in any suit, action, or proceeding, except as provided in this subsection (5).