Petroleum County, Montana — Property Hazard, Flood Zone, Soil, Water & EPA Guide
What Are the Flood, Soil Foundation & EPA Risks in Petroleum County, MT?
In Petroleum County, Montana, public U.S. EPA records track 24 regulated facilities (#60 of 65 in Montana), including 1 (4.2%) High-Risk sites and $0 in federal penalties. Countywide due diligence also covers 1 Safe Drinking Water (SDWIS) facilities, 23 Clean Water NPDES permits, 2 FEMA Federal Disaster Declarations (2 flood/storm), USDA Soil Foundation Shrink-Swell (HIGH signal), and EPA Zone 1 — High Potential (> 4.0 pCi/L).
Petroleum County, MT 6-in-1 Flood, Soil Foundation, Tap Water & Radon Signals
🔒 Parcel-Level Soil LEP %, Water Table Depth & Flood Zone Require Street Address Scan📊 Petroleum County, MT Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 05, 2026)Municipalities in Petroleum County
ZIP Codes in Petroleum County
Top EPA Regulated Facilities in Petroleum County, MT
100% of High-Risk & penalized facilities have facility names, street names, and dockets redacted (3 Low-Risk compliant records shown as Free Previews).
| Facility Name / Hazard Type | Sector Location (Street Redacted) | Risk Tier & Score | Compliance Status | Enforcement / Unlock |
|---|---|---|---|---|
| 🔒 Locked High-Risk EPA Enforcement Record #1 | 🔒 Exact Street & Parcel Redacted • WINNETT, MT (ZIP 59087 Sector) | HIGH (64/100) | Significant Violation (11 qtrs NC) | 🔒 11 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #2 | 🔒 Exact Street & Parcel Redacted • WINNETT, MT (ZIP 59087 Sector) | MODERATE (41/100) | Violation Identified (12 qtrs NC) | 🔒 12 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #3 | 🔒 Exact Street & Parcel Redacted • WINNETT, MT (ZIP 59087 Sector) | MODERATE (41/100) | Violation Identified (12 qtrs NC) | 🔒 12 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #4 | 🔒 Exact Street & Parcel Redacted • WINNETT, MT (ZIP 59087 Sector) | MODERATE (40/100) | Violation Identified (12 qtrs NC) | 🔒 12 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #5 | 🔒 Exact Street & Parcel Redacted • WINNETT, MT (ZIP 59087 Sector) | MODERATE (38/100) | Violation Identified (12 qtrs NC) | 🔒 12 Qtrs Non-Compliance • Unlock → |
| BLM DRAG DAM FREE PREVIEW (LOW RISK) | N 24.8 ON VALENTINE RD, WINNETT, MT 59087 | LOW (18/100) | No Violation Identified (0 qtrs NC) | $0 |
| LD CONSTRUCTION - LOWER RIVER ROAD FREE PREVIEW (LOW RISK) | NORTH ON CAT CREEK ROAD, WINNETT, MT 59087 | LOW (18/100) | No Violation Identified (0 qtrs NC) | $0 |
| MAIN STREET - WINNETT FREE PREVIEW (LOW RISK) | MAIN ST (S-244) TO HIGHWAY 200 INTERSECTION, WINNETT, MT 59087 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
| J AND S CONSTRUCTION - LOWER RIVER ROAD RECONSTRUCTION FREE PREVIEW (LOW RISK) | 2MI E INTERX LOWER TIN CAN HILL AND 79 TRAIL, WINNETT, MT 59087 | LOW (16/100) | No Violation Identified (0 qtrs NC) | $0 |
| 🔒 Locked Regulated EPA Enforcement Record #6 | 🔒 Exact Street & Parcel Redacted • WINNETT, MT (ZIP 59087 Sector) | LOW (16/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #7 | 🔒 Exact Street & Parcel Redacted • WINNETT, MT (ZIP 59087 Sector) | LOW (16/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #8 | 🔒 Exact Street & Parcel Redacted • WINNETT, MT (ZIP 59084 Sector) | LOW (16/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
Frequently Asked Questions — Petroleum County, Montana Environmental Due Diligence
How many EPA-regulated environmental sites are in Petroleum County, Montana?
Public U.S. EPA records track 24 regulated facilities in Petroleum County, Montana (ranking #60 of 65 jurisdictions in MT). Of those, 1 (4.2%) are classified in the High-Risk tier due to significant enforcement or chemical release history, and 5 (20.8%) have active non-compliance quarters.
Which ZIP codes and cities in Petroleum County have the highest regulated facility density?
Within Petroleum County, the highest concentrations of EPA-tracked facilities are located in ZIP 59087 (Winnett, 18 sites), ZIP 59084 (Winnett, 6 sites), spanning municipal corridors including Winnett (24 sites).
How many hazardous waste (RCRA) and toxic release (TRI) handlers operate in Petroleum County?
Across Petroleum County, 0 facilities (0.0% of regulated sites) are registered Resource Conservation and Recovery Act (RCRA) hazardous waste generators or handlers, and 0 industrial sites report toxic chemical releases to the EPA Toxics Release Inventory (TRI).
What is the EPA Radon Zone classification for Petroleum County, MT?
Geologic indoor air screening places Petroleum County in EPA Zone 1 — High Potential (> 4.0 pCi/L). Counties in EPA Radon Zone 1 have a predicted average indoor radon screening level greater than 4.0 pCi/L (the EPA action threshold). Short-term or continuous indoor radon testing is strongly recommended prior to closing.
How many drinking water systems (SDWIS), impaired water bodies, and FEMA flood disasters are recorded in Petroleum County, MT?
Federal records track 1 Safe Drinking Water (SDWIS) facilities, 23 Clean Water Act NPDES permits, and 8 impaired water dischargers in Petroleum County, alongside 2 historical FEMA federal disaster declarations (2 flood/storm events).
Does Petroleum County, MT have expansive clay soil or foundation risk?
USDA regional soil engineering screening for Petroleum County indicates a HIGH shrink-swell risk signal and steel pipe corrosivity rated High. Run a street address scan to unlock the exact parcel soil series, LEP %, and water table depth.