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.
What this page shows
This page covers Clean Air Act facilities in the EPA air register with violations in IA for 2025. It lists 98 violations recorded in 2025.