County page
Jefferson County
Jefferson County currently shows 1 Superfund site, 59 imported facility profiles, and 57,064 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 Jefferson County.
The latest loaded TRI year is 2024, with 57,064 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
Basin Mining Area
Basin Mining Area is in EPA's Superfund layer for Basin, MT. Live ingestion currently includes the official EPA detail links and geocoded site record.
Facilities
Worst polluters and compliance pressure
Marks Miller Post and Pole
Violation Identified across 12 of the last 12 quarters in the imported ECHO record.
City of Boulder Wwtf
Violation Identified across 12 of the last 12 quarters in the imported ECHO record.
Elkhorn Goldfields Inc Elkhorn Mine Site
Violation Identified across 12 of the last 12 quarters in the imported ECHO record.
Golden Sunlight Mine
Violation Identified across 12 of the last 12 quarters in the imported ECHO record.
Jefferson County - Weed and Mosquito Districts
Violation Identified across 12 of the last 12 quarters in the imported ECHO record.
Lewis & Clark Caversn State Park Upper Visitor Center
Violation Identified across 12 of the last 12 quarters in the imported ECHO record.
Lewis and Clark Caverns Campground
Violation Identified across 12 of the last 12 quarters in the imported ECHO record.
Ot Mining Corporation
Violation Identified across 12 of the last 12 quarters in the imported ECHO record.
Basin County Water and Sewer Dist
Violation Identified across 12 of the last 12 quarters in the imported ECHO record.
Boulder City of
Violation Identified across 12 of the last 12 quarters in the imported ECHO record.
Evergreen At Clancy
Violation Identified across 12 of the last 12 quarters in the imported ECHO record.
Jackson Creek Bar and Grille
Violation Identified across 12 of the last 12 quarters in the imported ECHO record.
Red Cliff Estates Hoa-full Time Disinfection W/sodium Hypochlo
Violation Identified across 12 of the last 12 quarters in the imported ECHO record.
Boulder River In Between I-15 and I-15 Frontage Road
Violation Identified across 11 of the last 12 quarters in the imported ECHO record.
Bridge Pylon Pullout
Violation Identified across 11 of the last 12 quarters in the imported ECHO record.
Knowlton Placer
Violation Identified across 11 of the last 12 quarters in the imported ECHO record.
Whitehall Town of
Significant noncompliance across 11 of the last 12 quarters in the imported ECHO record.
Elkhorn Rehabilitation Center Llc
Significant Violation across 10 of the last 12 quarters in the imported ECHO record.
Molly 1 and Molly 2
Significant noncompliance across 10 of the last 12 quarters in the imported ECHO record.
Sherwood Swanson Suction Dredge Jefferson River
Significant noncompliance across 10 of the last 12 quarters in the imported ECHO record.
| Chemical | Group | Facilities | Total pounds |
|---|---|---|---|
| Lead compounds | Metals and metal compounds | 2 | 56,743 lbs |
| Chromium | Metals and metal compounds | 1 | 311 lbs |
| Mercury compounds | TRI-listed chemical | 1 | 10 lbs |
| Arsenic compounds | TRI-listed chemical | 1 | 0 lbs |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | Metals and metal compounds | 1 | 0 lbs |
Violation pages
State-level violation context tied to this county
-
Clean Air Act violations in Montana
Montana facilities in the imported ECHO data show air-program oversight, inspections, or noncompliance signals.
-
Clean Water Act violations in Montana
Montana facilities in the imported ECHO data show water-permit pressure, inspections, or noncompliance signals.
-
RCRA violations in Montana
Montana facilities in the imported ECHO data show hazardous-waste or RCRA oversight signals.