Each and all of the respective areas of land heretofore attempted to be organized into water districts, including all areas attempted to be annexed thereto, or into local improvement districts or utility local improvement districts, under the provisions of chapter 114, Laws of 1929, and amendments thereto, are hereby validated and declared to be duly existing water districts, or local improvement districts, or utility local improvement districts, as the case may be, having the respective boundaries set forth in their organization and annexation proceedings as shown by the files in the office of the board of county commissioners of the county in question and of such water districts.