Sweet Grass County, Montana — Property Hazard, Flood Zone, Soil, Water & EPA Guide
What Are the Flood, Soil Foundation & EPA Risks in Sweet Grass County, MT?
In Sweet Grass County, Montana, public U.S. EPA records track 117 regulated facilities (#38 of 65 in Montana), including 2 (1.7%) High-Risk sites and $0 in federal penalties. Countywide due diligence also covers 16 Safe Drinking Water (SDWIS) facilities, 87 Clean Water NPDES permits, 2 FEMA Federal Disaster Declarations (1 flood/storm), USDA Soil Foundation Shrink-Swell (HIGH signal), and EPA Zone 1 — High Potential (> 4.0 pCi/L).
Sweet Grass 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📊 Sweet Grass County, MT Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 05, 2026)Municipalities in Sweet Grass County
ZIP Codes in Sweet Grass County
Top EPA Regulated Facilities in Sweet Grass 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 • BIG TIMBER, MT (ZIP 59011 Sector) | HIGH (64/100) | Significant Violation (10 qtrs NC) | 🔒 10 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #2 | 🔒 Exact Street & Parcel Redacted • BIG TIMBER, MT (ZIP 59011 Sector) | HIGH (64/100) | Significant Violation (7 qtrs NC) | 🔒 7 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #3 | 🔒 Exact Street & Parcel Redacted • BIG TIMBER, MT (ZIP 59011 Sector) | MODERATE (40/100) | Violation Identified (12 qtrs NC) | 🔒 12 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #4 | 🔒 Exact Street & Parcel Redacted • GREYCLIFF, MT (ZIP 59033 Sector) | MODERATE (31/100) | Violation Identified (4 qtrs NC) | 🔒 4 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #5 | 🔒 Exact Street & Parcel Redacted • BIG TIMBER, MT (ZIP 59011 Sector) | MODERATE (30/100) | Resolved / Historical Non-Compliance (3 qtrs NC) | 🔒 3 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #6 | 🔒 Exact Street & Parcel Redacted • BIG TIMBER, MT (ZIP 59011 Sector) | MODERATE (30/100) | Inactive (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #7 | 🔒 Exact Street & Parcel Redacted • BILLINGS, MT (ZIP 59104 Sector) | MODERATE (30/100) | Resolved / Historical Non-Compliance (1 qtrs NC) | 🔒 1 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #8 | 🔒 Exact Street & Parcel Redacted • BUTTE, MT (ZIP 59702 Sector) | MODERATE (23/100) | Resolved / Historical Non-Compliance (2 qtrs NC) | 🔒 2 Qtrs Non-Compliance • Unlock → |
| LODESTAR MINING MILL FREE PREVIEW (LOW RISK) | 26 LOWER DEER CREEK RD, BIG TIMBER, MT 59011 | LOW (19/100) | No Violation Identified (0 qtrs NC) | $0 |
| OASIS ENVIRONMENTAL INC - EXCAVATED GROUND WATER PIT FREE PREVIEW (LOW RISK) | PIT AREA, BIG TIMBER, MT 59011 | LOW (18/100) | No Violation Identified (0 qtrs NC) | $0 |
| YELLOWSTONE PIPE LINE CO - BIG TIMBER CREEK PIPELINE REPLACEMENT FREE PREVIEW (LOW RISK) | 370 FT S OF HOWIE RD BRIDGE, BIG TIMBER, MT 59011 | LOW (18/100) | No Violation Identified (0 qtrs NC) | $0 |
| CREMER 2-24 FREE PREVIEW (LOW RISK) | 2.2KM SE OF MELVILLE S OF RUPERT RD, MELVILLE, MT 59055 | LOW (18/100) | No Violation Identified (0 qtrs NC) | $0 |
Frequently Asked Questions — Sweet Grass County, Montana Environmental Due Diligence
How many EPA-regulated environmental sites are in Sweet Grass County, Montana?
Public U.S. EPA records track 117 regulated facilities in Sweet Grass County, Montana (ranking #38 of 65 jurisdictions in MT). Of those, 2 (1.7%) are classified in the High-Risk tier due to significant enforcement or chemical release history, and 4 (3.4%) have active non-compliance quarters.
Which ZIP codes and cities in Sweet Grass County have the highest regulated facility density?
Within Sweet Grass County, the highest concentrations of EPA-tracked facilities are located in ZIP 59011 (Big Timber, 83 sites), ZIP 59033 (Greycliff, 8 sites), ZIP 59055 (Melville, 8 sites), spanning municipal corridors including Big Timber (84 sites), Melville (8 sites), Greycliff (8 sites).
How many hazardous waste (RCRA) and toxic release (TRI) handlers operate in Sweet Grass County?
Across Sweet Grass County, 12 facilities (10.3% 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 Sweet Grass County, MT?
Geologic indoor air screening places Sweet Grass 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 Sweet Grass County, MT?
Federal records track 16 Safe Drinking Water (SDWIS) facilities, 87 Clean Water Act NPDES permits, and 36 impaired water dischargers in Sweet Grass County, alongside 2 historical FEMA federal disaster declarations (1 flood/storm events).
Does Sweet Grass County, MT have expansive clay soil or foundation risk?
USDA regional soil engineering screening for Sweet Grass County indicates a HIGH shrink-swell risk signal and steel pipe corrosivity rated Moderate. Run a street address scan to unlock the exact parcel soil series, LEP %, and water table depth.