EPA Air · stack tests by state and year
Air-emissions stack tests in Missouri, 2026
- 326Stack tests
A stack test measures what a source actually emits, at the stack, against the limit in its permit. Every stack test below was recorded against a source in Missouri during 2026; one facility can appear more than once, because this is a record of what happened rather than a list of places.
Counties in Missouri, 2026
- Christian County 105
- Undetermined County 46
- Greene County 38
- Buchanan County 20
- Ste. Genevieve County 17
- Johnson County 12
- Lincoln County 11
- Jackson County 10
- Ralls County 8
- Boone County 6
- Jefferson County 6
- St. Louis County 5
- Barton County 4
- Holt County 4
- Pettis County 4
- St. Louis (city) County 3
- Pike County 3
- St. Charles County 3
- Cass County 3
- Randolph County 3
Missouri, other years
Air-emissions stack tests recorded in Missouri, 2026
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2026-04-09 | RIVER CEMENT CO. DBA BUZZI UNICEM USA SELMA PLANT | FESTUS, Jefferson, MO | Pass | State |
| 2026-04-09 | RIVER CEMENT CO. DBA BUZZI UNICEM USA SELMA PLANT | FESTUS, Jefferson, MO | Pass | State |
| 2026-04-07 | ANHEUSER BUSCH, LLC, ST.LOUIS BREWERY | SAINT LOUIS, St. Louis (city), MO | Pass | State |
| 2026-04-01 | METAL CONTAINER CORPORATION — high-priority violation on file | ARNOLD, Jefferson, MO | Pending | State |
| 2026-04-01 | METAL CONTAINER CORPORATION — high-priority violation on file | ARNOLD, Jefferson, MO | Pending | State |
| 2026-04-01 | METAL CONTAINER CORPORATION — high-priority violation on file | ARNOLD, Jefferson, MO | Pending | State |
| 2026-04-01 | METAL CONTAINER CORPORATION — high-priority violation on file | ARNOLD, Jefferson, MO | Pending | State |
| 2026-04-01 | BLACK OAK POWER PRODUCERS LLC | HARTVILLE, Wright, MO | Pass | State |
| 2026-04-01 | BLACK OAK POWER PRODUCERS LLC | HARTVILLE, Wright, MO | Pass | State |
| 2026-03-30 | THOMAS HILL ENERGY CENTER - POWER DIVISION | CLIFTON HILL, Randolph, MO | Pass | State |
| 2026-03-26 | NOBLE HILL SANITARY LANDFILL | WILLARD, Greene, MO | Pass | State |
| 2026-03-25 | LAMAR CITY ELECTRICAL GENERATION | LAMAR, Barton, MO | Pass | State |
| 2026-03-25 | LAMAR CITY ELECTRICAL GENERATION | LAMAR, Barton, MO | Pass | State |
| 2026-03-25 | LAMAR CITY ELECTRICAL GENERATION | LAMAR, Barton, MO | Pass | State |
| 2026-03-25 | LAMAR CITY ELECTRICAL GENERATION | LAMAR, Barton, MO | Pass | State |
| 2026-03-25 | CENTRAL MISSOURI RENEWABLE NATURAL GAS LLC | SEDALIA, Pettis, MO | Pass | State |
| 2026-03-25 | MISSISSIPPI LIME COMPANY | SAINTE GENEVIEVE, Ste. Genevieve, MO | Pass | State |
| 2026-03-19 | LITTLE BLUE VALLEY SEWER DISTRICT - ATHERTON WASTEWATER TREATMENT PLANT | INDEPENDENCE, Jackson, MO | Pass | State |
| 2026-03-19 | LITTLE BLUE VALLEY SEWER DISTRICT - ATHERTON WASTEWATER TREATMENT PLANT | INDEPENDENCE, Jackson, MO | Pass | State |
| 2026-03-19 | LITTLE BLUE VALLEY SEWER DISTRICT - ATHERTON WASTEWATER TREATMENT PLANT | INDEPENDENCE, Jackson, MO | Pass | State |
| 2026-03-19 | LITTLE BLUE VALLEY SEWER DISTRICT - ATHERTON WASTEWATER TREATMENT PLANT | INDEPENDENCE, Jackson, MO | Pass | State |
| 2026-03-13 | CLARIOS, LLC | SAINT JOSEPH, Buchanan, MO | Pass | State |
| 2026-03-13 | CLARIOS, LLC | SAINT JOSEPH, Buchanan, MO | Pass | State |
| 2026-03-13 | CLARIOS, LLC | SAINT JOSEPH, Buchanan, MO | Pass | State |
| 2026-03-13 | CLARIOS, LLC | SAINT JOSEPH, Buchanan, MO | Pass | State |
| 2026-03-12 | SOUTHWEST CLEAN WATER PLANT SPRINGFIELD | SPRINGFIELD, Greene, MO | Pass | State |
| 2026-03-12 | SOUTHWEST CLEAN WATER PLANT SPRINGFIELD | SPRINGFIELD, Greene, MO | Pass | State |
| 2026-03-12 | ENERSYS, INC. — high-priority violation on file | WARRENSBURG, Johnson, MO | Pass | State |
| 2026-03-12 | ENERSYS, INC. — high-priority violation on file | WARRENSBURG, Johnson, MO | Pass | State |
| 2026-03-12 | ENERSYS, INC. — high-priority violation on file | WARRENSBURG, Johnson, MO | Pass | State |
| 2026-03-12 | ENERSYS, INC. — high-priority violation on file | WARRENSBURG, Johnson, MO | Pass | State |
| 2026-03-06 | THOMAS HILL ENERGY CENTER - POWER DIVISION | CLIFTON HILL, Randolph, MO | Pass | State |
| 2026-03-05 | CLARIOS, LLC | SAINT JOSEPH, Buchanan, MO | Pass | State |
| 2026-03-05 | CLARIOS, LLC | SAINT JOSEPH, Buchanan, MO | Pass | State |
| 2026-03-05 | CLARIOS, LLC | SAINT JOSEPH, Buchanan, MO | Pass | State |
| 2026-03-05 | CLARIOS, LLC | SAINT JOSEPH, Buchanan, MO | Fail | State |
| 2026-03-05 | CLARIOS, LLC | SAINT JOSEPH, Buchanan, MO | Pass | State |
| 2026-03-05 | CLARIOS, LLC | SAINT JOSEPH, Buchanan, MO | Pass | State |
| 2026-03-05 | SOUTHERN STAR CENTRAL PIPELINE-PECULIAR | PECULIAR, Cass, MO | Pass | State |
| 2026-03-05 | SOUTHERN STAR CENTRAL PIPELINE-PECULIAR | PECULIAR, Cass, MO | Pass | State |
| 2026-03-05 | SOUTHERN STAR CENTRAL PIPELINE-PECULIAR | PECULIAR, Cass, MO | Pass | State |
| 2026-03-03 | CAPITAL QUARRIES CO. INC (PORT-0930) | PORTABLE, Undetermined, MO | Pass | State |
| 2026-03-03 | CAPITAL QUARRIES CO. INC (PORT-0930) | PORTABLE, Undetermined, MO | Pass | State |
| 2026-03-03 | CAPITAL QUARRIES CO. INC (PORT-0930) | PORTABLE, Undetermined, MO | Pass | State |
| 2026-03-03 | CAPITAL QUARRIES CO. INC (PORT-0930) | PORTABLE, Undetermined, MO | Pass | State |
| 2026-03-03 | CAPITAL QUARRIES CO. INC (PORT-0930) | PORTABLE, Undetermined, MO | Pass | State |
| 2026-03-03 | CAPITAL QUARRIES CO. INC (PORT-0930) | PORTABLE, Undetermined, MO | Pass | State |
| 2026-03-03 | CAPITAL QUARRIES CO. INC (PORT-0930) | PORTABLE, Undetermined, MO | Pass | State |
| 2026-03-03 | CAPITAL QUARRIES CO. INC (PORT-0930) | PORTABLE, Undetermined, MO | Pass | State |
| 2026-03-03 | CAPITAL QUARRIES CO. INC (PORT-0930) | PORTABLE, Undetermined, MO | Pending | State |
| 2026-03-03 | CAPITAL QUARRIES CO. INC (PORT-0930) | PORTABLE, Undetermined, MO | Pass | State |
| 2026-03-03 | CAPITAL QUARRIES CO. INC (PORT-0930) | PORTABLE, Undetermined, MO | Pass | State |
| 2026-03-03 | CAPITAL QUARRIES CO. INC (PORT-0930) | PORTABLE, Undetermined, MO | Pass | State |
| 2026-03-03 | CAPITAL QUARRIES CO. INC (PORT-0930) | PORTABLE, Undetermined, MO | Pass | State |
| 2026-03-03 | CAPITAL QUARRIES CO. INC (PORT-0930) | PORTABLE, Undetermined, MO | Pass | State |
| 2026-03-03 | CAPITAL QUARRIES CO. INC (PORT-0930) | PORTABLE, Undetermined, MO | Pass | State |
| 2026-03-03 | CAPITAL QUARRIES CO. INC (PORT-0930) | PORTABLE, Undetermined, MO | Pass | State |
| 2026-03-03 | CAPITAL QUARRIES CO. INC (PORT-0930) | PORTABLE, Undetermined, MO | Pass | State |
| 2026-03-03 | CAPITAL QUARRIES CO. INC (PORT-0930) | PORTABLE, Undetermined, MO | Pass | State |
| 2026-03-03 | CAPITAL QUARRIES CO. INC (PORT-0930) | PORTABLE, Undetermined, MO | Pass | State |
| 2026-03-03 | CAPITAL QUARRIES CO. INC (PORT-0930) | PORTABLE, Undetermined, MO | Pass | State |
| 2026-03-03 | CAPITAL QUARRIES CO. INC (PORT-0930) | PORTABLE, Undetermined, MO | Pass | State |
| 2026-03-03 | CAPITAL QUARRIES CO. INC (PORT-0930) | PORTABLE, Undetermined, MO | Pass | State |
| 2026-03-03 | CAPITAL QUARRIES CO. INC (PORT-0931) | PORTABLE, Undetermined, MO | Pass | State |
| 2026-03-03 | CAPITAL QUARRIES CO. INC (PORT-0931) | PORTABLE, Undetermined, MO | Pass | State |
| 2026-03-03 | CAPITAL QUARRIES CO. INC (PORT-0931) | PORTABLE, Undetermined, MO | Pass | State |
| 2026-03-03 | CAPITAL QUARRIES CO. INC (PORT-0931) | PORTABLE, Undetermined, MO | Pass | State |
| 2026-03-03 | CAPITAL QUARRIES CO. INC (PORT-0931) | PORTABLE, Undetermined, MO | Pass | State |
| 2026-03-03 | CAPITAL QUARRIES CO. INC (PORT-0931) | PORTABLE, Undetermined, MO | Pass | State |
| 2026-03-03 | CAPITAL QUARRIES CO. INC (PORT-0931) | PORTABLE, Undetermined, MO | Pass | State |
| 2026-03-03 | CAPITAL QUARRIES CO. INC (PORT-0931) | PORTABLE, Undetermined, MO | Pass | State |
| 2026-03-03 | CAPITAL QUARRIES CO. INC (PORT-0931) | PORTABLE, Undetermined, MO | Pass | State |
| 2026-03-03 | CAPITAL QUARRIES CO. INC (PORT-0931) | PORTABLE, Undetermined, MO | Pass | State |
| 2026-02-26 | MISSISSIPPI LIME COMPANY | SAINTE GENEVIEVE, Ste. Genevieve, MO | Pass | State |
| 2026-02-26 | AMERICA'S HEARTLAND PACKING | WRIGHT CITY, Warren, MO | Pending | State |
| 2026-02-20 | ENERSYS ENERGY PRODUCTS INC - SPRINGFIELD 1 | SPRINGFIELD, Greene, MO | Pass | State |
| 2026-02-20 | ENERSYS ENERGY PRODUCTS INC - SPRINGFIELD 1 | SPRINGFIELD, Greene, MO | Pass | State |
| 2026-02-20 | ENERSYS ENERGY PRODUCTS INC - SPRINGFIELD 1 | SPRINGFIELD, Greene, MO | Pass | State |
| 2026-02-20 | ENERSYS ENERGY PRODUCTS INC - SPRINGFIELD 1 | SPRINGFIELD, Greene, MO | Pass | State |
| 2026-02-20 | ENERSYS ENERGY PRODUCTS INC - SPRINGFIELD 1 | SPRINGFIELD, Greene, MO | Pass | State |
| 2026-02-20 | ENERSYS ENERGY PRODUCTS INC - SPRINGFIELD 1 | SPRINGFIELD, Greene, MO | Pass | State |
| 2026-02-20 | ENERSYS ENERGY PRODUCTS INC - SPRINGFIELD 1 | SPRINGFIELD, Greene, MO | Pass | State |
| 2026-02-20 | ENERSYS ENERGY PRODUCTS INC - SPRINGFIELD 1 | SPRINGFIELD, Greene, MO | Pass | State |
| 2026-02-20 | ENERSYS ENERGY PRODUCTS INC - SPRINGFIELD 1 | SPRINGFIELD, Greene, MO | Pass | State |
| 2026-02-20 | ENERSYS ENERGY PRODUCTS INC - SPRINGFIELD 1 | SPRINGFIELD, Greene, MO | Pass | State |
| 2026-02-20 | ENERSYS ENERGY PRODUCTS INC - SPRINGFIELD 1 | SPRINGFIELD, Greene, MO | Pass | State |
| 2026-02-20 | ENERSYS ENERGY PRODUCTS INC - SPRINGFIELD 1 | SPRINGFIELD, Greene, MO | Pass | State |
| 2026-02-20 | ENERSYS, INC. — high-priority violation on file | WARRENSBURG, Johnson, MO | Pending | State |
| 2026-02-20 | ENERSYS, INC. — high-priority violation on file | WARRENSBURG, Johnson, MO | Pass | State |
| 2026-02-20 | ENERSYS, INC. — high-priority violation on file | WARRENSBURG, Johnson, MO | Pending | State |
| 2026-02-20 | ENERSYS, INC. — high-priority violation on file | WARRENSBURG, Johnson, MO | Pass | State |
| 2026-02-17 | CENTRAL MISSOURI SANITARY LANDFILL | SEDALIA, Pettis, MO | Fail | State |
| 2026-02-17 | CENTRAL MISSOURI SANITARY LANDFILL | SEDALIA, Pettis, MO | Fail | State |
| 2026-02-17 | CENTRAL MISSOURI SANITARY LANDFILL | SEDALIA, Pettis, MO | Pass | State |
| 2026-02-16 | THOMAS HILL ENERGY CENTER - POWER DIVISION | CLIFTON HILL, Randolph, MO | Pass | State |
| 2026-02-11 | BCP INGREDIENTS | VERONA, Lawrence, MO | N/A | U.S. EPA |
| 2026-02-09 | CONTINENTAL COAL- WALNUT CREEK | RICH HILL, Bates, MO | Pass | State |
| 2026-02-09 | ENERSYS, INC. — high-priority violation on file | WARRENSBURG, Johnson, MO | Pass | State |
| 2026-02-09 | ENERSYS, INC. — high-priority violation on file | WARRENSBURG, Johnson, MO | Pass | State |
| 2026-02-05 | GENERAL MOTORS LLC | WENTZVILLE, St. Charles, MO | N/A | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.