intervening defendants appeal from a judgment of the Circuit Court of Cook County declaring the Cook County Zoning Ordinance unconstitutional to the extent that it prohibits use of plaintiffs' property for a sanitary landfill. The judgment enjoins interference with the use of plaintiffs' property as a landfill and orders the defendant county to issue any *366 necessary license and permits for the work in conformity with the judgment and in conformity with the regulations of the county. The plaintiffs are Society of the Divine Word and Missionary Sisters, Servants of the Holy Spirit, each an Illinois not-for-profit corporation, which own the land in question. Intervening plaintiffs are the Villages of Winnetka, Kenilworth, Wilmette, Glencoe and the City of Evanston, each of which intervening plaintiffs desire the subject propertybear a `real and substantial relation to the public health, safety, morals or general welfare'. (Columbus Park Cong. v. Board of Appeals of Chicago, 25 Ill.2d 65, 71.)"
The subject property is a compact tract of approximately 187 acres bounded on the south by Willow Road, on the north by Techny Road, on the east by West Fork of the North Branch of the Chicago River. The west boundary is formed by the Chicago and Northwestern Railroad which proceeds southwesterly from Techny Road and the Chicago, Milwaukee, St. Paul and Pacific Railroad which proceeds southeasterly from Techny Road. The railroads cross each other near the center of the west boundary. The property extends a little less than a half mile on Willow Road. The Techny Road boundary *373 on