Iowa.

§ 81.316 Iowa.

Iowa—TSP

Designated area Does not meet primary standards Does not meet secondary standards Cannot be classified Better than national standards
Central portion of WaterlooX
Cedar Falls TownshipX
East Waterloo TownshipX
Remainder of Black Hawk CountyX
Mason City—A portion of Cerro Gordo County contained entirely within sections 27, 28, 29, 32, 33, 34 and 35 of T97N R20W and sections 2, 3, 4 and 5 of T96N R20WX
Mason City—two separate portions of Cerro Gordo County contained entirely within sections 13, 24 and 25 of T97N R21W; sections 18, 19, 20, 21, 30, 31 and 35 of T97N R20W; and sections 1, 2, 3, 4, 5, 8, 9, 10, 11, 12, 15, 16 and 17 of T96N R20WX
Falls TownshipX
Lake TownshipX
Lincoln TownshipX
Remainder of Cerro Gordo CountyX
An area around downtown ClintonX
Comanche TownshipX
Remainder of Clinton CountyX
Burlington TownshipX
Remainder of Des Moines CountyX
Iowa City TownshipX
Remainder of Johnson CountyX
An area in and near KeokukX
Jackson TownshipX
Jefferson TownshipX
Madison TownshipX
Remainder of Lee CountyX
Cedar Rapids—a portion of Linn County contained entirely within T 82 N., R 7 W.; and T 83 N., R 7 WX
Bertram TownshipX
Clinton TownshipX
College TownshipX
Fairfax TownshipX
Marion TownshipX
Monroe TownshipX
Putnam TownshipX
Remainder of Linn CountyX
The central portion of MarshalltownX
Remainder of Marshall CountyX
The central and southern portions of MuscatineX
Fruitland TownshipX
Sweetland TownshipX
Montpelier TownshipX
Remainder of Muscatine CountyX
An area of central Des Moines east of U.S. Highway 65 & 69 (E. 14th Street)X
Portions of Polk County contained entirely within T 78 N. R 23 W.; T 78 N. R 24 W.; T 78 N. R 25 W.; T 80 R 24 W.; T 79 N. R 23 W.; T 79 N. R 24 W.; and T 79 R 25 WX
Clay TownshipX
Douglas TownshipX
Jefferson TownshipX
Remainder of Polk CountyX
The western portion of Council Bluffs and Carter LakeX
Lake TownshipX
Lewis TownshipX
Remainder of Pottawatomie CountyX
Portions of Buffalo, Davenport, Bettendorf and RiverdaleX
Remainder of Scott CountyX
Center TownshipX
Remainder of Wapello CountyX
The central portion Ft. DodgeX
Otho TownshipX
Remainder of Webster CountyX
The central and southern portions of Sioux CityX
Liberty TownshipX
Woodbury TownshipX
Remainder of Woodbury CountyX
Remainder of StateX

1 EPA designation replaces State designation.

Iowa—1971 Sulfur Dioxide NAAQS

[Primary and Secondary]

Designated area Does not meet primary standards Does not meet secondary standards Cannot be classified Better than national standards
Entire stateX

Iowa—2010 Sulfur Dioxide NAAQS

[Primary]

Designated area 1Designation
Date 2Type
Muscatine, IA10/4/13Nonattainment.
Muscatine County (part)
Sections 1–3, 10–15, 22–27, 34–36 of T77N, R3W (Lake Township)
Sections 1–3, 10–15, 22–27, 34–36 of T76N, R3W (Seventy-six Township)
T77N, R2W (Bloomington Township)
T76N, R2W (Fruitland Township)
All sections except 1, 12, 13, 24, 25, 36 of T77N, R1W (Sweetland Township)
Linn County, IAUnclassifiable.
Linn County
Woodbury County, IA9/12/16Unclassifiable.
Woodbury County
Des Moines County, IA9/12/16Attainment/Unclassifiable.
Des Moines County
Louisa County, IAAttainment/Unclassifiable.
Louisa County
Pottawattamie County, IAAttainment/Unclassifiable.
Pottawattamie County
Wapello County, IA9/12/16Attainment/Unclassifiable.
Wapello County
Statewide:Attainment/Unclassifiable.
Adair County
Adams County
Allamakee County
Appanoose County
Audubon County
Benton County
Black Hawk County
Boone County
Bremer County
Buchanan County
Buena Vista County
Butler County
Calhoun County
Carroll County
Cass County
Cedar County
Cerro Gordo County
Cherokee County
Chickasaw County
Clarke County
Clay County
Clayton County
Clinton County
Crawford County
Dallas County
Davis County
Decatur County
Delaware County
Dickinson County
Dubuque County
Emmet County
Fayette County
Floyd County
Franklin County
Fremont County
Greene County
Grundy County
Guthrie County
Hamilton County
Hancock County
Hardin County
Harrison County
Henry County
Howard County
Humboldt County
Ida County
Iowa County
Jackson County
Jasper County
Jefferson County
Johnson County
Jones County
Keokuk County
Kossuth County
Lee County
Lucas County
Lyon County
Madison County
Mahaska County
Marion County
Marshall County
Mills County
Mitchell County
Monona County
Monroe County
Montgomery County
Muscatine County (portion of Muscatine County not designated Nonattainment on 10/4/13)
O'Brien County
Osceola County
Page County
Palo Alto County
Plymouth County
Pocahontas County
Polk County
Poweshiek County
Ringgold County
Sac County
Scott County
Shelby County
Sioux County
Story County
Tama County
Taylor County
Union County
Van Buren County
Warren County
Washington County
Wayne County
Webster County
Winnebago County
Winneshiek County
Worth County
Wright County

1 Includes any Indian country in each county or area, unless otherwise specified. EPA is not determining the boundaries of any area of Indian country in this table, including any area of Indian country located in the larger designation area. The inclusion of any Indian country in the designation area is not a determination that the state has regulatory authority under the Clean Air Act for such Indian country.

2 This date is April 9, 2018, unless otherwise noted.

Iowa—Carbon Monoxide

Designated Area Designation Classification
Date 1Type Date 1Type
StatewideUnclassifiable/Attainment
Adair County
Adams County
Allamakee County
Appanoose County
Audubon County
Benton County
Black Hawk County
Boone County
Bremer County
Buchanan County
Buena Vista County
Butler County
Calhoun County
Carroll County
Cass County
Cedar County
Cerro Gordo County
Cherokee County
Chickasaw County
Clarke County
Clay County
Clayton County
Clinton County
Crawford County
Dallas County
Davis County
Decatur County
Delaware County
Des Moines County
Dickinson County
Dubuque County
Emmet County
Fayette County
Floyd County
Franklin County
Fremont County
Greene County
Grundy County
Guthrie County
Hamilton County
Hancock County
Hardin County
Harrison County
Henry County
Howard County
Humboldt County
Ida County
Iowa County
Jackson County
Jasper County
Jefferson County
Johnson County
Jones County
Keokuk County
Kossuth County
Lee County
Linn County
Louisa County
Lucas County
Lyon County
Madison County
Mahaska County
Marion County
Marshall County
Mills County
Mitchell County
Monona County
Monroe County
Montgomery County
Muscatine County
O'Brien County
Osceola County
Page County
Palo Alto County
Plymouth County
Pocahontas County
Polk County
Pottawattamie County
Poweshiek County
Ringgold County
Sac County
Scott County
Shelby County
Sioux County
Story County
Tama County
Taylor County
Union County
Van Buren County
Wapello County
Warren County
Washington County
Wayne County
Webster County
Winnebago County
Winneshiek County
Woodbury County
Worth County
Wright County

1 This date is November 15, 1990, unless otherwise noted.

Iowa—Ozone (1-Hour Standard) 2

Designated area Designation Classification
Date 1Type Date 1Type
StatewideUnclassifiable/Attainment
Adair County
Adams County
Allamakee County
Appanoose County
Audubon County
Benton County
Black Hawk County
Boone County
Bremer County
Buchanan County
Buena Vista County
Butler County
Calhoun County
Carroll County
Cass County
Cedar County
Cerro Gordo County
Cherokee County
Chickasaw County
Clarke County
Clay County
Clayton County
Clinton County
Crawford County
Dallas County
Davis County
Decatur County
Delaware County
Des Moines County
Dickinson County
Dubuque County
Emmet County
Fayette County
Floyd County
Franklin County
Fremont County
Greene County
Grundy County
Guthrie County
Hamilton County
Hancock County
Hardin County
Harrison County
Henry County
Howard County
Humboldt County
Ida County
Iowa County
Jackson County
Jasper County
Jefferson County
Johnson County
Jones County
Keokuk County
Kossuth County
Lee County
Linn County
Louisa County
Lucas County
Lyon County
Madison County
Mahaska County
Marion County
Marshall County
Mills County
Mitchell County
Monona County
Monroe County
Montgomery County
Muscatine County
O'Brien County
Osceola County
Page County
Palo Alto County
Plymouth County
Pocahontas County
Polk County
Pottawattamie County
Poweshiek County
Ringgold County
Sac County
Scott County
Shelby County
Sioux County
Story County
Tama County
Taylor County
Union County
Van Buren County
Wapello County
Warren County
Washington County
Wayne County
Webster County
Winnebago County
Winneshiek County
Woodbury County
Worth County
Wright County
This document is only available to subscribers. Please log in or purchase access.