If the court or chancellor thereof finds that the proposed water supply district should be organized, the chancellor shall then order an election in each county in the proposed district, which election shall be held not less than twenty-one nor more than forty-five days from the date of such order, whereby the qualified electors within such counties may determine if such county shall be a part of such proposed district; and such order for an election shall be interlocutory and not appealable. A substantial copy of the court order shall be published once a week for at least three consecutive weeks in at least one newspaper published in each county in such district. If there is no newspaper published in any such county, then it shall be sufficient to publish said notice in a newspaper having a general circulation in such county and, in addition, by posting a copy of such notice for at least twenty-one days following the issuance of such order at three public places in such county. Notice of the election shall be given by publishing a substantial copy of the court order providing for the election once a week for at least three consecutive weeks, in at least one newspaper published in each county in which an election is to be held. The first publication of such notice shall be made not less than twenty-one days prior to the date fixed for such election. If no newspaper is published in any such county, then such notice shall be given by publishing the same for the required time in some newspaper having a general circulation in such county and, in addition, by posting a copy of such notice for at least twenty-one days next preceding such election at three public places in such county.