2009 California Public Utilities Code - Section 98080 :: Article 6. Contest Of Incorporation

98080.  No informality in any proceeding or in the conduct of the
election, not substantially affecting adversely the legal rights of
any citizen, shall be held to invalidate the incorporation of the
district. Any proceedings wherein the validity of incorporation is
denied shall be commenced within three months from the date of filing
the order declaring the result of the election with the Secretary of
State, otherwise the incorporation and the legal existence of the
district shall be held to be valid and in every respect legal and
incontestable.