Contaminated sites (DEQ)
State-listed contaminated and cleanup sites from Montana DEQ.
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About this data
- Published by
- Montana Department of Environmental Quality
- Method
- DEQ site list.
- Update frequency
- Periodic
- Last updated
- Oct 6, 2026
- Records
- 763
- Coverage
- Statewide.
Records in 55 of 56 counties.
Known gaps
Status only; case files stay with DEQ.
Preview
The newest or first 500 records. Click a column heading to sort. Use the filter to find a place or a name.
Fields
| Field | Column | Description |
|---|---|---|
| Fac name | fac_name | |
| Use status | use_status | |
| Ssu summary | ssu_summary | |
| Longitude | lon | WGS84 degrees. |
| Latitude | lat | WGS84 degrees. |
Downloads and links
Data 4 MT is an index of public records. It republishes only what Montana and federal agencies make public, with a link to the source on each record. People are shown as “Private individual” on public pages and downloads; companies, trusts held by institutions, and governments keep their names. No document images, sale prices, voter, MVD or wildlife-telemetry data are stored. Verify any record against the publisher’s copy before relying on it.