EPA Air · violations by state and year
High-priority air violations in South Dakota, 2025
- 44Violations
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 South Dakota 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 South Dakota, 2025
- Minnehaha County 6
- Brookings County 6
- Turner County 4
- Harding County 4
- Pennington County 4
- Brown County 4
- Beadle County 3
South Dakota, other years
High-priority air violations recorded in South Dakota, 2025
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2025-11-20 | REDFIELD ENERGY LLC — high-priority violation on file | REDFIELD, Beadle, SD | Earliest FRV determination | State |
| 2025-10-23 | HURON ENERGY LLC, DBA GLACIAL LAKES ENERGY LLC — high-priority violation on file | HURON, Beadle, SD | Earliest FRV determination | State |
| 2025-09-23 | SIMON CONTRACTORS OF SD INC. | RAPID CITY, Pennington, SD | Earliest FRV determination | State |
| 2025-09-23 | MAGELLAN PIPELINE COMPANY, LP - RAPID CITY TERMINAL | RAPID CITY, Pennington, SD | Earliest FRV determination | State |
| 2025-09-22 | POET BIOPROCESSING - CHANCELLOR, LLC — high-priority violation on file | CHANCELLOR, Turner, SD | Earliest FRV determination | State |
| 2025-09-11 | NUGEN ENERGY LLC — high-priority violation on file | MARION, Turner, SD | Earliest FRV determination | State |
| 2025-09-11 | SANFORD USD MEDICAL CENTER | SIOUX FALLS, Minnehaha, SD | Earliest FRV determination | State |
| 2025-09-11 | SHOWPLACE WOOD PRODUCTS INC | HARRISBURG, Lincoln, SD | Earliest FRV determination | State |
| 2025-09-10 | BASIN ELECTRIC - DEER CREEK STATION | ELKTON, Brookings, SD | Earliest FRV determination | State |
| 2025-09-10 | T&R ELECTRIC SUPPLY COMPANY | COLMAN, Moody, SD | Earliest FRV determination | State |
| 2025-09-09 | BASIN ELECTRIC POWER COOPERATIVE GROTON GENERATING | GROTON, Brown, SD | Earliest FRV determination | State |
| 2025-09-09 | AGTEGRA COOPERATIVE - CRAVEN | IPSWICH, Edmunds, SD | Earliest FRV determination | State |
| 2025-09-02 | SIOUX FALLS WATER RECLAMATION | SIOUX FALLS, Minnehaha, SD | Earliest FRV determination | State |
| 2025-08-29 | KNTC LLC DBA SIOUX MARBLE INC. | BRANDON, Minnehaha, SD | Earliest FRV determination | State |
| 2025-08-28 | SMITHFIELD PACKAGED MEATS CORP. | SIOUX FALLS, Minnehaha, SD | Earliest FRV determination | State |
| 2025-08-21 | PRAIRIE AQUATECH MANUFACTURING, LLC DBA HOUDEK MANUFACTURING | VOLGA, Brookings, SD | Earliest FRV determination | State |
| 2025-08-21 | SOUTH DAKOTA STATE UNIVERSITY | BROOKINGS, Brookings, SD | Earliest FRV determination | State |
| 2025-07-25 | CONTINENTAL RESOURCES - SOUTH BUFFALO (CTB#11) | NEAR BUFFALO, Harding, SD | Earliest FRV determination | State |
| 2025-07-25 | CONTINENTAL RESOURCES - WEST BUFFALO (CTB25) | NEAR BUFFALO, Harding, SD | Earliest FRV determination | State |
| 2025-07-25 | CONTINENTAL RESOURCES - SOUTH BUFFALO (CTB#3) | NEAR BUFFALO, Harding, SD | Earliest FRV determination | State |
| 2025-07-25 | CONTINENTAL RESOURCES - BUFFALO (CTB#1) | NEAR BUFFALO, Harding, SD | Earliest FRV determination | State |
| 2025-07-10 | UNIVERSITY OF SOUTH DAKOTA — high-priority violation on file | VERMILLION, Clay, SD | Earliest FRV determination | State |
| 2025-06-26 | POET RESEARCH CENTER - SCOTLAND — high-priority violation on file | SCOTLAND, Bon Homme, SD | HPV day-zero determination | State |
| 2025-06-25 | NUSTAR PIPELINE OPERATING PARTNERSHIP LP - YANKTON | YANKTON, Yankton, SD | Earliest FRV determination | State |
| 2025-06-20 | JACK LINK'S BEEF JERKY | ALPENA, Jerauld, SD | Earliest FRV determination | State |
| 2025-06-18 | 3M COMPANY - ABERDEEN — high-priority violation on file | ABERDEEN, Brown, SD | Earliest FRV determination | State |
| 2025-06-17 | ABERDEEN ENERGY, LLC — high-priority violation on file | MINA, Edmunds, SD | Earliest FRV determination | State |
| 2025-06-17 | HUB CITY ENERGY, LLC — high-priority violation on file | ABERDEEN, Brown, SD | Earliest FRV determination | State |
| 2025-06-03 | NOVITA AURORA, LLC | AURORA, Brookings, SD | Earliest FRV determination | State |
| 2025-06-02 | NUGEN ENERGY LLC — high-priority violation on file | MARION, Turner, SD | Earliest FRV determination | State |
| 2025-06-02 | BLACK HILLS POWER, INC. (LANGE) | RAPID CITY, Pennington, SD | Earliest FRV determination | State |
| 2025-06-02 | GCC DACOTAH — high-priority violation on file | RAPID CITY, Pennington, SD | Earliest FRV determination | State |
| 2025-06-02 | MASTERBRAND CABINETS LLC | SIOUX FALLS, Minnehaha, SD | Earliest FRV determination | State |
| 2025-06-02 | MIDWEST RAILCAR REPAIR INC | CORSON, Minnehaha, SD | Earliest FRV determination | State |
| 2025-06-02 | NOVITA AURORA, LLC | AURORA, Brookings, SD | Earliest FRV determination | State |
| 2025-06-02 | POET BIOPROCESSING - CHANCELLOR, LLC — high-priority violation on file | CHANCELLOR, Turner, SD | Earliest FRV determination | State |
| 2025-06-02 | POET BIOREFINING - MITCHELL LLC | MITCHELL, Davison, SD | Earliest FRV determination | State |
| 2025-06-02 | POET RESEARCH CENTER - SCOTLAND — high-priority violation on file | SCOTLAND, Bon Homme, SD | Earliest FRV determination | State |
| 2025-06-02 | REDFIELD ENERGY LLC — high-priority violation on file | REDFIELD, Beadle, SD | Earliest FRV determination | State |
| 2025-06-02 | RING NECK ENERGY & FEED LLC — high-priority violation on file | ONIDA, Sully, SD | Earliest FRV determination | State |
| 2025-06-02 | UNIVERSITY OF SOUTH DAKOTA — high-priority violation on file | VERMILLION, Clay, SD | Earliest FRV determination | State |
| 2025-06-02 | VALERO RENEWABLE FUELS COMPANY LLC — high-priority violation on file | AURORA, Brookings, SD | Earliest FRV determination | State |
| 2025-04-08 | POET BIOREFINING - MITCHELL LLC | MITCHELL, Davison, SD | Earliest FRV determination | State |
| 2025-03-11 | AG PROCESSING INC. | ABERDEEN, Brown, SD | 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 SD for 2025. It lists 44 violations recorded in 2025.