The Southwest Minnesota Intrastate Air Quality Control Region consists of the territorial area encompassed by the boundaries of the following jurisdictions or described area (including the territorial area of all municipalities (as defined in section 302(f) of the Clean Air Act, 42 U.S.C. 1875h(f) geographically located within the outermost boundaries of the area so delimited):
In the State of Minnesota: Big Stone County, Chippewa County, Cottonwood County, Jackson County, Kandiyohi County, Lac qui Parle County, Lincoln County, Lyon County, McLeod County, Meeker County, Murray County, Nobles County, Pipestone County, Redwood County, Renville County, Rock County, Swift County, Yellow Medicine County.