EPA Air · violations by state and year
High-priority air violations in Iowa, 2025
- 98Violations
A high-priority violation is the most serious class of Clean Air Act non-compliance an agency records against a source; a federally reportable violation is the next step down in severity. Every violation below was recorded against a source in Iowa during 2025; one facility can appear more than once, because this is a record of what happened rather than a list of places.
Counties in Iowa, 2025
- Muscatine County 8
- Cerro Gordo County 7
- Kossuth County 6
- Clinton County 5
- Woodbury County 5
- Webster County 5
- Butler County 4
- Linn County 4
- Wright County 3
- Hamilton County 3
- Palo Alto County 3
- Hardin County 3
- Warren County 3
Iowa, other years
High-priority air violations recorded in Iowa, 2025
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2025-12-22 | CF INDUSTRIES NITROGEN LLC - PORT NEAL NITROGEN COMPLEX — high-priority violation on file | SERGEANT BLUFF, Woodbury, IA | HPV day-zero determination | State |
| 2025-12-16 | ROQUETTE AMERICA INC — high-priority violation on file | KEOKUK, Lee, IA | Earliest FRV determination | State |
| 2025-12-11 | CDI LLC - CHARLES CITY — high-priority violation on file | CHARLES CITY, Floyd, IA | Earliest FRV determination | State |
| 2025-12-11 | POET BIOREFINING - GOWRIE, LLC — high-priority violation on file | GOWRIE, Webster, IA | Earliest FRV determination | State |
| 2025-12-11 | CDI LLC - FOREST CITY — high-priority violation on file | FOREST CITY, Winnebago, IA | Earliest FRV determination | State |
| 2025-12-11 | CENTRAL DISPOSAL SYSTEMS INC — high-priority violation on file | LAKE MILLS, Winnebago, IA | Earliest FRV determination | State |
| 2025-12-06 | DUBUQUE METROPOLITAN SANITARY LANDFILL — high-priority violation on file | DUBUQUE, Dubuque, IA | Earliest FRV determination | State |
| 2025-12-01 | GOLD EAGLE COOPERATIVE - 69 MILL — high-priority violation on file | GALT, Wright, IA | Earliest FRV determination | State |
| 2025-11-24 | SOUTHWEST IOWA RENEWABLE ENERGY — high-priority violation on file | COUNCIL BLUFFS, Pottawattamie, IA | Earliest FRV determination | State |
| 2025-11-10 | SILGAN CONTAINER MANUFACTURING CORP. — high-priority violation on file | BURLINGTON, Des Moines, IA | Earliest FRV determination | State |
| 2025-11-10 | WB SCOTT AREA LLC — high-priority violation on file | DAVENPORT, Scott, IA | Earliest FRV determination | State |
| 2025-11-10 | AFINITAS — high-priority violation on file | MEDIAPOLIS (HISTORICAL), Des Moines, IA | Earliest FRV determination | State |
| 2025-11-10 | ELITE OCTANE, LLC — high-priority violation on file | ATLANTIC, Cass, IA | Earliest FRV determination | State |
| 2025-11-07 | INTERNATIONAL PAPER - CEDAR RIVER PAPER — high-priority violation on file | CEDAR RAPIDS, Linn, IA | Earliest FRV determination | Local |
| 2025-11-05 | TEMPLETON RYE SPIRITS, LLC — high-priority violation on file | TEMPLETON, Carroll, IA | Earliest FRV determination | State |
| 2025-11-03 | ADM CLINTON BIOPROCESSING - CLINTON — high-priority violation on file | CLINTON, Clinton, IA | HPV day-zero determination | State |
| 2025-10-24 | ADM CLINTON BIOPROCESSING - CLINTON — high-priority violation on file | CLINTON, Clinton, IA | Earliest FRV determination | State |
| 2025-10-23 | GRAIN PROCESSING CORP — high-priority violation on file | MUSCATINE, Muscatine, IA | Earliest FRV determination | State |
| 2025-10-23 | POET BIOREFINING - LIBERTY (EMMETSBURG) — high-priority violation on file | EMMETSBURG, Palo Alto, IA | Earliest FRV determination | State |
| 2025-10-06 | VALERO RENEWABLE FUELS COMPANY. LLC D/B/A VALERO LAKOTA PLANT — high-priority violation on file | LAKOTA, Kossuth, IA | Earliest FRV determination | State |
| 2025-09-30 | ADM CLINTON BIOPROCESSING - CLINTON — high-priority violation on file | CLINTON, Clinton, IA | Earliest FRV determination | State |
| 2025-09-29 | POET BIOREFINING - HANLONTOWN | HANLONTOWN, Worth, IA | Earliest FRV determination | State |
| 2025-09-15 | VALERO RENEWABLE FUELS COMPANY. LLC D/B/A VALERO LAKOTA PLANT — high-priority violation on file | LAKOTA, Kossuth, IA | Earliest FRV determination | State |
| 2025-09-10 | CENTRAL IOWA RENEWABLE ENERGY (CORN) LP | GOLDFIELD, Wright, IA | Earliest FRV determination | State |
| 2025-08-28 | POET BIOREFINING IOWA FALLS, LLC — high-priority violation on file | IOWA FALLS, Hardin, IA | Earliest FRV determination | State |
| 2025-08-28 | AG PROCESSING INC-EAGLE GROVE | EAGLE GROVE, Wright, IA | Earliest FRV determination | State |
| 2025-08-27 | ADM CLINTON BIOPROCESSING - CLINTON — high-priority violation on file | CLINTON, Clinton, IA | Earliest FRV determination | State |
| 2025-08-25 | CF INDUSTRIES NITROGEN LLC - PORT NEAL NITROGEN COMPLEX — high-priority violation on file | SERGEANT BLUFF, Woodbury, IA | HPV day-zero determination | State |
| 2025-08-19 | POET BIOREFINING - SHELL ROCK, LLC — high-priority violation on file | SHELL ROCK, Butler, IA | Earliest FRV determination | State |
| 2025-08-19 | ABSOLUTE ENERGY LLC-SAINT ANSGAR (MONA) | SAINT ANSGAR, Mitchell, IA | Earliest FRV determination | State |
| 2025-08-14 | HEIDELBERG MATERIALS US CEMENT LLC — high-priority violation on file | MASON CITY, Cerro Gordo, IA | Earliest FRV determination | State |
| 2025-08-14 | HEIDELBERG MATERIALS US CEMENT LLC — high-priority violation on file | MASON CITY, Cerro Gordo, IA | Earliest FRV determination | State |
| 2025-08-12 | ZINPRO CORP - GARNER — high-priority violation on file | GARNER, Hancock, IA | Earliest FRV determination | State |
| 2025-08-12 | CARGILL INC-IOWA FALLS | IOWA FALLS, Hardin, IA | Earliest FRV determination | State |
| 2025-08-12 | ROBERTSON CECO II DBA STAR BLDG SYSTEMS | MONTICELLO (HISTORICAL), Jones, IA | Earliest FRV determination | State |
| 2025-08-01 | INDIANOLA WPC DEPT-WWTP NORTH | INDIANOLA (HISTORICAL), Warren, IA | Earliest FRV determination | State |
| 2025-08-01 | XERXES LLC | TIPTON (HISTORICAL), Cedar, IA | Earliest FRV determination | State |
| 2025-08-01 | ACH FOAM TECHNOLOGIES LLC | WASHINGTON, Washington, IA | Earliest FRV determination | State |
| 2025-07-30 | INDIANOLA MUNICIPAL UTILITIES | INDIANOLA (HISTORICAL), Warren, IA | Earliest FRV determination | State |
| 2025-07-30 | KRAFT HEINZ - MUSCATINE | MUSCATINE, Muscatine, IA | Earliest FRV determination | State |
| 2025-07-30 | SIEGWERK USA CO | DES MOINES, Polk, IA | Earliest FRV determination | State |
| 2025-07-29 | IPL-LIME CREEK COMBUSTION TURBINES | MASON CITY, Cerro Gordo, IA | Earliest FRV determination | State |
| 2025-07-22 | ADM CLINTON BIOPROCESSING - CLINTON — high-priority violation on file | CLINTON, Clinton, IA | Earliest FRV determination | State |
| 2025-07-22 | GRAIN PROCESSING CORP — high-priority violation on file | MUSCATINE, Muscatine, IA | Earliest FRV determination | State |
| 2025-07-17 | INGREDION INCORPORATED | CEDAR RAPIDS, Linn, IA | Earliest FRV determination | Local |
| 2025-07-15 | BARKLEY ASPHALT INC | SIOUX CITY, Woodbury, IA | Earliest FRV determination | State |
| 2025-07-10 | MTBT - MARSHALLTOWN | MARSHALLTOWN, Marshall, IA | HPV day-zero determination | State |
| 2025-07-10 | MTBT - OTTUMWA | OTTUMWA, Wapello, IA | HPV day-zero determination | State |
| 2025-07-08 | UNIVERSITY OF NORTHERN IOWA | CEDAR FALLS, Black Hawk, IA | Earliest FRV determination | State |
| 2025-07-07 | CARGILL INC-CEDAR RAPIDS NE | CEDAR RAPIDS, Linn, IA | Earliest FRV determination | State |
| 2025-07-01 | PLATINUM CRUSH | ALTA, Buena Vista, IA | HPV day-zero determination | State |
| 2025-06-25 | VALERO RENEWABLE FUELS COMPANY. LLC D/B/A VALERO LAKOTA PLANT — high-priority violation on file | LAKOTA, Kossuth, IA | Earliest FRV determination | State |
| 2025-06-24 | DIAMOND V MILLS, INC. SOUTH PLANT | CEDAR RAPIDS, Linn, IA | Earliest FRV determination | Local |
| 2025-06-16 | HOMELAND ENERGY SOLUTIONS LLC — high-priority violation on file | LAWLER, Chickasaw, IA | Earliest FRV determination | State |
| 2025-06-03 | POET BIOREFINING - ASHTON | ASHTON, Osceola, IA | Earliest FRV determination | State |
| 2025-06-03 | POET BIOREFINING CORNING — high-priority violation on file | CORNING, Adams, IA | Earliest FRV determination | State |
| 2025-06-03 | INDUSTRIAL LAMINATES/NORPLEX INC | POSTVILLE, Allamakee, IA | Earliest FRV determination | State |
| 2025-06-02 | CARGILL INC-SIOUX CITY — high-priority violation on file | SIOUX CITY, Woodbury, IA | Earliest FRV determination | State |
| 2025-05-20 | AMERICAN PACKAGING CORP | STORY CITY, Story, IA | Earliest FRV determination | State |
| 2025-05-20 | HARSCO METALS | MUSCATINE, Muscatine, IA | Earliest FRV determination | State |
| 2025-05-20 | SILGAN CONTAINERS MFG CORP-FORT MADISON | FORT MADISON, Lee, IA | Earliest FRV determination | State |
| 2025-05-20 | GRAIN PROCESSING CORP — high-priority violation on file | MUSCATINE, Muscatine, IA | Earliest FRV determination | State |
| 2025-05-20 | GRAIN PROCESSING CORP — high-priority violation on file | MUSCATINE, Muscatine, IA | Earliest FRV determination | State |
| 2025-05-20 | SEABEE - 1ST ST - HAMPTON HYDRAULICS | HAMPTON, Franklin, IA | Earliest FRV determination | State |
| 2025-05-16 | CARGILL INC-FORT DODGE — high-priority violation on file | FORT DODGE, Webster, IA | Earliest FRV determination | State |
| 2025-05-15 | POET BIOREFINING - FAIRBANK, LLC | FAIRBANK, Buchanan, IA | Earliest FRV determination | State |
| 2025-05-08 | NOVELIS ALR ALUMINUM, LLC (NOVELIS DAVENPORT CASTING) | DAVENPORT, Scott, IA | HPV day-zero determination | State |
| 2025-05-08 | POET BIOREFINING - MENLO, LLC | MENLO, Guthrie, IA | Earliest FRV determination | State |
| 2025-05-07 | ALGONA MUNICIPAL UTILITIES | ALGONA, Kossuth, IA | Earliest FRV determination | State |
| 2025-05-07 | POET BIOREFINING - COON RAPIDS, LLC | COON RAPIDS, Guthrie, IA | Earliest FRV determination | State |
| 2025-05-06 | GOLDEN GRAIN ENERGY LLC — high-priority violation on file | MASON CITY, Cerro Gordo, IA | HPV day-zero determination | State |
| 2025-05-06 | POET BIOREFINING - GOWRIE, LLC — high-priority violation on file | GOWRIE, Webster, IA | Earliest FRV determination | State |
| 2025-05-05 | ZINPRO CORP - GARNER — high-priority violation on file | GARNER, Hancock, IA | Earliest FRV determination | State |
| 2025-04-22 | VAN DIEST SUPPLY CO | WEBSTER CITY, Hamilton, IA | Earliest FRV determination | State |
| 2025-04-21 | POET BIOREFINING IOWA FALLS, LLC — high-priority violation on file | IOWA FALLS, Hardin, IA | Earliest FRV determination | State |
| 2025-04-17 | HEIDELBERG MATERIALS US CEMENT LLC — high-priority violation on file | MASON CITY, Cerro Gordo, IA | Earliest FRV determination | State |
| 2025-04-10 | POET BIOREFINING - LIBERTY (EMMETSBURG) — high-priority violation on file | EMMETSBURG, Palo Alto, IA | Earliest FRV determination | State |
| 2025-04-10 | POET BIOREFINING - SHELL ROCK, LLC — high-priority violation on file | SHELL ROCK, Butler, IA | Earliest FRV determination | State |
| 2025-04-09 | POET BIOREFINING - ARTHUR, LLC — high-priority violation on file | ARTHUR, Ida, IA | Earliest FRV determination | State |
| 2025-04-07 | POET BIOREFINING - JEWELL | JEWELL, Hamilton, IA | Earliest FRV determination | State |
| 2025-03-31 | SSAB IOWA INC — high-priority violation on file | MUSCATINE, Muscatine, IA | HPV day-zero determination | State |
| 2025-03-27 | POET BIOREFINING - LIBERTY (EMMETSBURG) — high-priority violation on file | EMMETSBURG, Palo Alto, IA | Earliest FRV determination | State |
| 2025-03-26 | OSMIUM DATA CENTER — high-priority violation on file | WEST DES MOINES, Warren, IA | Earliest FRV determination | State |
| 2025-03-25 | HEIDELBERG MATERIALS US CEMENT LLC — high-priority violation on file | MASON CITY, Cerro Gordo, IA | HPV day-zero determination | State |
| 2025-03-12 | U S GYPSUM CO-FORT DODGE | FORT DODGE, Webster, IA | Earliest FRV determination | State |
| 2025-03-11 | CARGILL INC-SIOUX CITY — high-priority violation on file | SIOUX CITY, Woodbury, IA | HPV day-zero determination | State |
| 2025-03-03 | VALERO RENEWABLE FUELS COMPANY. LLC D/B/A VALERO LAKOTA PLANT — high-priority violation on file | LAKOTA, Kossuth, IA | Earliest FRV determination | State |
| 2025-02-19 | VALERO RENEWABLE FUELS COMPANY. LLC D/B/A VALERO LAKOTA PLANT — high-priority violation on file | LAKOTA, Kossuth, IA | Earliest FRV determination | State |
| 2025-02-12 | ELITE OCTANE, LLC — high-priority violation on file | ATLANTIC, Cass, IA | Earliest FRV determination | State |
| 2025-02-04 | WESTERN IOWA ENERGY LLC | WALL LAKE, Sac, IA | Earliest FRV determination | State |
| 2025-01-30 | POET BIOREFINING - JEWELL | JEWELL, Hamilton, IA | Earliest FRV determination | State |
| 2025-01-29 | SHELL ROCK SOY PROCESSING | SHELL ROCK, Butler, IA | HPV day-zero determination | State |
| 2025-01-14 | EARLVILLE MUNICIPAL UTILITIES | EARLVILLE, Delaware, IA | Earliest FRV determination | State |
| 2025-01-14 | SHELL ROCK SOY PROCESSING | SHELL ROCK, Butler, IA | Earliest FRV determination | State |
| 2025-01-09 | HEIDELBERG MATERIALS US CEMENT LLC — high-priority violation on file | MASON CITY, Cerro Gordo, IA | Earliest FRV determination | State |
| 2025-01-09 | JOHN DEERE WATERLOO WORKS-DRIVE TRAIN | WATERLOO, Black Hawk, IA | Earliest FRV determination | State |
| 2025-01-08 | GRAIN PROCESSING CORP — high-priority violation on file | MUSCATINE, Muscatine, IA | Earliest FRV determination | State |
| 2025-01-02 | POET BIOREFINING - GOWRIE, LLC — high-priority violation on file | GOWRIE, Webster, IA | Earliest FRV determination | State |
Dates as filed by the agency that recorded the violation. Figures from EPA’s ICIS-AIR download.