EPA Air · stack tests by state, industry and year
Utilities (NAICS 2211): stack tests in Iowa, 2025
- 110Stack tests
A stack test measures what a source actually emits, at the stack, against the limit in its permit. Each row is one stack test recorded during 2025 at a Iowa source whose primary industry code is NAICS 2211. A facility filing more than one industry code is counted under the first one on its record.
Utilities (NAICS 2211) in Iowa, other years
Other industries in Iowa, 2025
- Chemical manufacturing (NAICS 3251) 171
- Food manufacturing (NAICS 3112) 49
- Primary metal manufacturing (NAICS 3311) 12
- Utilities (NAICS 2213) 11
- Chemical manufacturing (NAICS 3259) 10
- Primary metal manufacturing (NAICS 3313) 9
- Pipeline transportation (NAICS 4862) 9
- Food manufacturing (NAICS 3111) 9
- Data processing and hosting (NAICS 5182) 9
- Nonmetallic mineral product manufacturing (NAICS 3274) 8
- Primary metal manufacturing (NAICS 3315) 8
- Chemical manufacturing (NAICS 3253) 8
- Publishing industries (NAICS 5112) 6
- Machinery manufacturing (NAICS 3331) 6
- Professional, scientific and technical services (NAICS 5419) 6
- Nonmetallic mineral product manufacturing (NAICS 3273) 6
- Hospitals (NAICS 6221) 5
- Mining and quarrying (NAICS 2123) 5
- Agriculture and forestry support (NAICS 1151) 5
- Food manufacturing (NAICS 3116) 4
- Petroleum and coal products manufacturing (NAICS 3241) 3
- Nonmetallic mineral product manufacturing (NAICS 3279) 3
- Justice, public order and safety (NAICS 9221) 3
Air-emissions stack tests recorded in Iowa, 2025
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2025-12-16 | FOREST CITY MUNICIPAL LIGHT PLANT | FOREST CITY, Winnebago, IA | Pass | State |
| 2025-12-16 | FOREST CITY MUNICIPAL LIGHT PLANT | FOREST CITY, Winnebago, IA | Pass | State |
| 2025-11-06 | NEW HAMPTON MUNICIPAL LIGHT & POWER | NEW HAMPTON, Chickasaw, IA | Pass | State |
| 2025-11-06 | METRO METHANE RECOVERY | MITCHELLVILLE, Polk, IA | Pass | Local |
| 2025-11-06 | METRO METHANE RECOVERY | MITCHELLVILLE, Polk, IA | Pass | Local |
| 2025-11-06 | METRO METHANE RECOVERY | MITCHELLVILLE, Polk, IA | Pass | Local |
| 2025-10-22 | IPL � MARSHALLTOWN GENERATING STATION | MARSHALLTOWN, Marshall, IA | Pass | State |
| 2025-10-22 | IPL � MARSHALLTOWN GENERATING STATION | MARSHALLTOWN, Marshall, IA | Pass | State |
| 2025-10-14 | VILLISCA MUNICIPAL POWER PLANT | VILLISCA, Montgomery, IA | Pass | State |
| 2025-10-14 | VILLISCA MUNICIPAL POWER PLANT | VILLISCA, Montgomery, IA | Pass | State |
| 2025-10-10 | IPL � MARSHALLTOWN GENERATING STATION | MARSHALLTOWN, Marshall, IA | Pass | State |
| 2025-10-02 | OSAGE MUNICIPAL UTILITIES | OSAGE, Mitchell, IA | Pass | State |
| 2025-10-02 | OSAGE MUNICIPAL UTILITIES | OSAGE, Mitchell, IA | Pass | State |
| 2025-10-02 | LAKE MILLS MUNICIPAL UTILITIES | LAKE MILLS, Winnebago, IA | Pass | State |
| 2025-10-02 | LAKE MILLS MUNICIPAL UTILITIES | LAKE MILLS, Winnebago, IA | Pass | State |
| 2025-10-02 | LAKE MILLS MUNICIPAL UTILITIES | LAKE MILLS, Winnebago, IA | Pass | State |
| 2025-10-01 | OSAGE MUNICIPAL UTILITIES | OSAGE, Mitchell, IA | Pass | State |
| 2025-10-01 | OSAGE MUNICIPAL UTILITIES | OSAGE, Mitchell, IA | Pass | State |
| 2025-09-18 | MOUNT PLEASANT MUNICIPAL UTILITIES | MOUNT PLEASANT, Henry, IA | Pass | State |
| 2025-09-18 | MOUNT PLEASANT MUNICIPAL UTILITIES | MOUNT PLEASANT, Henry, IA | Pass | State |
| 2025-09-18 | MOUNT PLEASANT MUNICIPAL UTILITIES | MOUNT PLEASANT, Henry, IA | Pass | State |
| 2025-09-18 | MOUNT PLEASANT MUNICIPAL UTILITIES | MOUNT PLEASANT, Henry, IA | Pass | State |
| 2025-09-18 | MOUNT PLEASANT MUNICIPAL UTILITIES | MOUNT PLEASANT, Henry, IA | Pass | State |
| 2025-09-18 | MOUNT PLEASANT MUNICIPAL UTILITIES | MOUNT PLEASANT, Henry, IA | Pass | State |
| 2025-09-12 | AMES MUNICIPAL UTILITIES & COMBUST TURB | AMES, Story, IA | Pass | State |
| 2025-09-04 | MID AMERICAN ENERGY CO-COUNCIL BLUFFS | COUNCIL BLUFFS, Pottawattamie, IA | Pass | State |
| 2025-09-04 | MIDAMERICAN ENERGY CO PLEASANT HILL GDMEC | PLEASANT HILL, Polk, IA | Pass | Local |
| 2025-09-03 | MIDAMERICAN ENERGY CO PLEASANT HILL GDMEC | PLEASANT HILL, Polk, IA | Pass | Local |
| 2025-08-26 | MCGREGOR MUNICIPAL UTILITIES | MCGREGOR, Clayton, IA | Pass | State |
| 2025-08-20 | UNIVERSITY OF IOWA | IOWA CITY, Johnson, IA | Pass | State |
| 2025-08-19 | FOREST CITY MUNICIPAL LIGHT PLANT | FOREST CITY, Winnebago, IA | Pass | State |
| 2025-08-19 | FOREST CITY MUNICIPAL LIGHT PLANT | FOREST CITY, Winnebago, IA | Pass | State |
| 2025-08-19 | FOREST CITY MUNICIPAL LIGHT PLANT | FOREST CITY, Winnebago, IA | Pass | State |
| 2025-07-31 | ESTHERVILLE MUNICIPAL UTILITIES-POWERPLT | ESTHERVILLE, Emmet, IA | Pass | State |
| 2025-07-29 | MID AMERICAN ENERGY CO-SERGEANT BLUFF | SERGEANT BLUFF, Woodbury, IA | Pass | State |
| 2025-07-29 | MID AMERICAN ENERGY CO-SERGEANT BLUFF | SERGEANT BLUFF, Woodbury, IA | Pass | State |
| 2025-07-23 | MIDAMERICAN ENERGY COMPANY | FORT DODGE, Webster, IA | Pass | State |
| 2025-06-26 | GRUNDY CENTER MUNICIPAL LIGHT & POWER | GRUNDY CENTER (HISTORICAL), Grundy, IA | Pass | State |
| 2025-06-26 | GRUNDY CENTER MUNICIPAL LIGHT & POWER | GRUNDY CENTER (HISTORICAL), Grundy, IA | Pass | State |
| 2025-06-26 | GRUNDY CENTER MUNICIPAL LIGHT & POWER | GRUNDY CENTER (HISTORICAL), Grundy, IA | Pass | State |
| 2025-06-24 | ESTHERVILLE MUNICIPAL UTILITIES-POWERPLT | ESTHERVILLE, Emmet, IA | Pass | State |
| 2025-06-24 | ESTHERVILLE MUNICIPAL UTILITIES-POWERPLT | ESTHERVILLE, Emmet, IA | Pass | State |
| 2025-06-24 | LENOX MUNICIPAL LIGHT & POWER | LENOX (HISTORICAL), Taylor, IA | Pass | State |
| 2025-06-19 | ALGONA MUNICIPAL UTILITIES | ALGONA, Kossuth, IA | Pass | State |
| 2025-06-19 | ALGONA MUNICIPAL UTILITIES | ALGONA, Kossuth, IA | Pass | State |
| 2025-06-18 | ALGONA MUNICIPAL UTILITIES | ALGONA, Kossuth, IA | Pass | State |
| 2025-06-18 | ALGONA MUNICIPAL UTILITIES | ALGONA, Kossuth, IA | Pass | State |
| 2025-06-10 | MUSCATINE POWER & WATER | MUSCATINE, Muscatine, IA | Pass | State |
| 2025-06-05 | PELLA WEST SUBSTATION — high-priority violation on file | PELLA, Marion, IA | Pass | State |
| 2025-06-05 | PELLA WEST SUBSTATION — high-priority violation on file | PELLA, Marion, IA | Pass | State |
| 2025-06-05 | PELLA WEST SUBSTATION — high-priority violation on file | PELLA, Marion, IA | Pass | State |
| 2025-06-05 | PELLA WEST SUBSTATION — high-priority violation on file | PELLA, Marion, IA | Pass | State |
| 2025-06-05 | PELLA WEST SUBSTATION — high-priority violation on file | PELLA, Marion, IA | Pass | State |
| 2025-06-05 | PELLA WEST SUBSTATION — high-priority violation on file | PELLA, Marion, IA | Pass | State |
| 2025-06-04 | PELLA WEST SUBSTATION — high-priority violation on file | PELLA, Marion, IA | Pass | State |
| 2025-06-04 | PELLA WEST SUBSTATION — high-priority violation on file | PELLA, Marion, IA | Pass | State |
| 2025-06-04 | PELLA WEST SUBSTATION — high-priority violation on file | PELLA, Marion, IA | Pass | State |
| 2025-06-03 | PELLA WEST SUBSTATION — high-priority violation on file | PELLA, Marion, IA | Pass | State |
| 2025-06-03 | PELLA WEST SUBSTATION — high-priority violation on file | PELLA, Marion, IA | Pass | State |
| 2025-06-03 | PELLA WEST SUBSTATION — high-priority violation on file | PELLA, Marion, IA | Pass | State |
| 2025-06-03 | PELLA WEST SUBSTATION — high-priority violation on file | PELLA, Marion, IA | Pass | State |
| 2025-05-15 | UNIVERSITY OF IOWA | IOWA CITY, Johnson, IA | Pass | State |
| 2025-05-15 | UNIVERSITY OF IOWA | IOWA CITY, Johnson, IA | Pass | State |
| 2025-05-14 | UNIVERSITY OF IOWA | IOWA CITY, Johnson, IA | Pass | State |
| 2025-05-14 | UNIVERSITY OF IOWA | IOWA CITY, Johnson, IA | Pass | State |
| 2025-05-13 | UNIVERSITY OF IOWA | IOWA CITY, Johnson, IA | Pass | State |
| 2025-05-13 | UNIVERSITY OF IOWA | IOWA CITY, Johnson, IA | Pass | State |
| 2025-04-22 | CASCADE MUNICIPAL UTILITIES | CASCADE, Dubuque, IA | Pass | State |
| 2025-04-17 | WAVERLY LIGHT & POWER-NORTH & SOUTH PLTS | WAVERLY, Bremer, IA | Pass | State |
| 2025-04-16 | WAVERLY LIGHT & POWER-NORTH & SOUTH PLTS | WAVERLY, Bremer, IA | Pass | State |
| 2025-04-16 | WAVERLY LIGHT & POWER-NORTH & SOUTH PLTS | WAVERLY, Bremer, IA | Pass | State |
| 2025-04-15 | WAVERLY LIGHT & POWER-NORTH & SOUTH PLTS | WAVERLY, Bremer, IA | Pass | State |
| 2025-04-10 | VINTON MUNICIPAL ELECTRIC UTILITIES | VINTON, Benton, IA | Pass | State |
| 2025-04-10 | VINTON MUNICIPAL ELECTRIC UTILITIES | VINTON, Benton, IA | Pass | State |
| 2025-04-10 | VINTON MUNICIPAL ELECTRIC UTILITIES | VINTON, Benton, IA | Pass | State |
| 2025-04-09 | VINTON MUNICIPAL ELECTRIC UTILITIES | VINTON, Benton, IA | Pass | State |
| 2025-04-09 | VINTON MUNICIPAL ELECTRIC UTILITIES | VINTON, Benton, IA | Pass | State |
| 2025-04-08 | NEW HAMPTON MUNICIPAL LIGHT & POWER | NEW HAMPTON, Chickasaw, IA | Pass | State |
| 2025-04-03 | MTBT - MARSHALLTOWN | MARSHALLTOWN, Marshall, IA | Pass | State |
| 2025-04-02 | MTBT - OTTUMWA | OTTUMWA, Wapello, IA | Pass | State |
| 2025-03-26 | MID AMERICAN ENERGY CO-KNOXVILLE | KNOXVILLE, Marion, IA | Pass | State |
| 2025-03-26 | MID AMERICAN ENERGY CO-KNOXVILLE | KNOXVILLE, Marion, IA | Pass | State |
| 2025-03-26 | MID AMERICAN ENERGY CO-KNOXVILLE | KNOXVILLE, Marion, IA | Pass | State |
| 2025-03-26 | MID AMERICAN ENERGY CO-KNOXVILLE | KNOXVILLE, Marion, IA | Pass | State |
| 2025-03-25 | MID AMERICAN ENERGY CO-KNOXVILLE | KNOXVILLE, Marion, IA | Pass | State |
| 2025-03-25 | MID AMERICAN ENERGY CO-KNOXVILLE | KNOXVILLE, Marion, IA | Pass | State |
| 2025-03-25 | MID AMERICAN ENERGY CO-KNOXVILLE | KNOXVILLE, Marion, IA | Pass | State |
| 2025-03-25 | MID AMERICAN ENERGY CO-KNOXVILLE | KNOXVILLE, Marion, IA | Pass | State |
| 2025-03-20 | MID AMERICAN ENERGY CO-SHENANDOAH | SHENANDOAH, Page, IA | Pass | State |
| 2025-03-20 | MID AMERICAN ENERGY CO-SHENANDOAH | SHENANDOAH, Page, IA | Pass | State |
| 2025-03-20 | MID AMERICAN ENERGY CO-SHENANDOAH | SHENANDOAH, Page, IA | Pass | State |
| 2025-03-19 | MID AMERICAN ENERGY CO-SHENANDOAH | SHENANDOAH, Page, IA | Pass | State |
| 2025-03-19 | MID AMERICAN ENERGY CO-SHENANDOAH | SHENANDOAH, Page, IA | Pass | State |
| 2025-03-19 | MID AMERICAN ENERGY CO-SHENANDOAH | SHENANDOAH, Page, IA | Pass | State |
| 2025-03-18 | MID AMERICAN ENERGY CO-SHENANDOAH | SHENANDOAH, Page, IA | Pass | State |
| 2025-03-18 | MID AMERICAN ENERGY CO-SHENANDOAH | SHENANDOAH, Page, IA | Pass | State |
| 2025-03-18 | MID AMERICAN ENERGY CO-SHENANDOAH | SHENANDOAH, Page, IA | Pass | State |
| 2025-03-18 | MID AMERICAN ENERGY CO-SHENANDOAH | SHENANDOAH, Page, IA | Pass | State |
| 2025-03-13 | MID AMERICAN ENERGY CO-WATERLOO | WATERLOO, Black Hawk, IA | Pass | State |
| 2025-03-12 | MID AMERICAN ENERGY CO-WATERLOO | WATERLOO, Black Hawk, IA | Pass | State |
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Primary NAICS code as filed on the facility record; dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.