County page
Rosebud County
Rosebud County currently shows 0 Superfund sites, 28 imported facility profiles, and 6,933,557 lbs in loaded TRI releases.
Overview
What this county page is saying
This live county page is generated from the ingested EPA datasets. It merges ECHO facility compliance rows, TRI release totals, and any Superfund sites attached to Rosebud County.
The latest loaded TRI year is 2024, with 6,933,557 lbs in county-level on-site releases tied to the imported facility set.
Focus points
Design and product notes
County pages combine facility compliance history with chemical release totals.
TRI chemistry shows what is being reported, while ECHO shows who keeps drawing enforcement attention.
Superfund records add legacy cleanup context even when live contaminant detail is still sparse.
Superfund layer
Cleanup sites in this county
Facilities
Worst polluters and compliance pressure
Ppl Colstrip Rosebud Power Plant
Violation Identified across 12 of the last 12 quarters in the imported ECHO record.
Northern Cheyenne Utility Commission Wastewater Treatment Plant
Significant Violation across 12 of the last 12 quarters, with $1,500 in recorded penalties.
City of Colstrip - Castle Rock Lake Pesticide
Violation Identified across 12 of the last 12 quarters in the imported ECHO record.
Oftedal Construction Inc
Significant Violation across 12 of the last 12 quarters in the imported ECHO record.
Rosebud County Western Energy Mine
Violation Identified across 11 of the last 12 quarters in the imported ECHO record.
Ashland Water and Sewer Dist
Significant noncompliance across 11 of the last 12 quarters in the imported ECHO record.
Lame Deer High School-treatment Plant (cl & Reverse Osmosis)
Violation Identified across 11 of the last 12 quarters in the imported ECHO record.
Rosebud School District No 12-treatment Plant 2 Potable
Significant noncompliance across 11 of the last 12 quarters in the imported ECHO record.
Busby Community Water System-treatment Plant
Violation Identified across 10 of the last 12 quarters in the imported ECHO record.
St Labre Indian School
Violation Identified across 9 of the last 12 quarters in the imported ECHO record.
Ppl Colstrip Steam Electric Station
No Violation Identified across 1 of the last 12 quarters in the imported ECHO record.
Lds Church Forsyth-treatment Plant Wells 1 2
Significant noncompliance across 7 of the last 12 quarters in the imported ECHO record.
Birney Village-birney Village Treatment Plant (ro)
Significant noncompliance across 6 of the last 12 quarters in the imported ECHO record.
Lame Deer Water System-middle East Treatment Plant (sp06)
Significant noncompliance across 6 of the last 12 quarters in the imported ECHO record.
Forsyth Wwtp
Significant noncompliance across 5 of the last 12 quarters in the imported ECHO record.
Prince Sand and Gravel Washing
No Violation Identified across 3 of the last 12 quarters in the imported ECHO record.
Western Energy Rosebud Mine Area F
No Violation Identified across 3 of the last 12 quarters in the imported ECHO record.
Colstrip City of
No Violation Identified across 3 of the last 12 quarters in the imported ECHO record.
Big Sky Mine
No Violation Identified across 2 of the last 12 quarters in the imported ECHO record.
Cross Four Ranch
No Violation Identified across 1 of the last 12 quarters in the imported ECHO record.
| Chemical | Group | Facilities | Total pounds |
|---|---|---|---|
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | TRI-listed chemical | 1 | 5,068,010 lbs |
| Manganese compounds | TRI-listed chemical | 1 | 1,009,580 lbs |
| Vanadium compounds | TRI-listed chemical | 1 | 94,393 lbs |
| Dichloromethane | TRI-listed chemical | 1 | 91,000 lbs |
| Copper compounds | TRI-listed chemical | 1 | 80,072 lbs |
| Nickel compounds | Metals and metal compounds | 1 | 74,774 lbs |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | Metals and metal compounds | 1 | 60,764 lbs |
| Lead compounds | Metals and metal compounds | 1 | 50,534 lbs |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | TRI-listed chemical | 1 | 49,000 lbs |
| Zinc compounds | TRI-listed chemical | 1 | 40,771 lbs |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | TRI-listed chemical | 1 | 25,000 lbs |
| Ethylene glycol | TRI-listed chemical | 1 | 17,200 lbs |
| Arsenic compounds | TRI-listed chemical | 1 | 14,450 lbs |
| Hydrogen fluoride | TRI-listed chemical | 1 | 11,000 lbs |
| Cobalt compounds | TRI-listed chemical | 1 | 10,930 lbs |
| Selenium compounds | TRI-listed chemical | 1 | 8,670 lbs |
| Beryllium compounds | TRI-listed chemical | 1 | 4,870 lbs |
| Mercury compounds | TRI-listed chemical | 1 | 570 lbs |
| Ethylbenzene | Volatile organic compound | 1 | 210 lbs |
| Naphthalene | TRI-listed chemical | 1 | 130 lbs |
Violation pages
State-level violation context tied to this county
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Clean Air Act violations in Montana
Montana facilities in the imported ECHO data show air-program oversight, inspections, or noncompliance signals.
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Clean Water Act violations in Montana
Montana facilities in the imported ECHO data show water-permit pressure, inspections, or noncompliance signals.
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RCRA violations in Montana
Montana facilities in the imported ECHO data show hazardous-waste or RCRA oversight signals.