Ravalli County, Montana — Property Hazard, Flood Zone, Soil, Water & EPA Guide
What Are the Flood, Soil Foundation & EPA Risks in Ravalli County, MT?
In Ravalli County, Montana, public U.S. EPA records track 542 regulated facilities (#8 of 65 in Montana), including 3 (0.6%) High-Risk sites and $0 in federal penalties. Countywide due diligence also covers 119 Safe Drinking Water (SDWIS) facilities, 333 Clean Water NPDES permits, 1 FEMA Federal Disaster Declarations (0 flood/storm), USDA Soil Foundation Shrink-Swell (LOW signal), and EPA Zone 1 — High Potential (> 4.0 pCi/L).
Ravalli 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📊 Ravalli County, MT Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 03, 2026)Municipalities in Ravalli County
Top EPA Regulated Facilities in Ravalli 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 • FLORENCE, MT (ZIP 59833 Sector) | HIGH (64/100) | Significant Violation (8 qtrs NC) | 🔒 8 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #2 | 🔒 Exact Street & Parcel Redacted • STEVENSVILLE, MT (ZIP 59807 Sector) | HIGH (64/100) | Significant Violation (8 qtrs NC) | 🔒 8 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #3 | 🔒 Exact Street & Parcel Redacted • DARBY, MT (ZIP 59829 Sector) | MODERATE (45/100) | Violation Identified (10 qtrs NC) | 🔒 10 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #4 | 🔒 Exact Street & Parcel Redacted • STEVENSVILLE, MT (ZIP 59870 Sector) | MODERATE (45/100) | Violation Identified (11 qtrs NC) | 🔒 11 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #5 | 🔒 Exact Street & Parcel Redacted • HAMILTON, MT (ZIP 59840 Sector) | MODERATE (44/100) | Violation Identified (12 qtrs NC) | 🔒 12 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #6 | 🔒 Exact Street & Parcel Redacted • HAMILTON, MT (ZIP 59840 Sector) | MODERATE (42/100) | Violation Identified (10 qtrs NC) | 🔒 10 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #7 | 🔒 Exact Street & Parcel Redacted • STEVENSVILLE, MT (ZIP 59870 Sector) | MODERATE (39/100) | Violation Identified (12 qtrs NC) | 🔒 12 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #8 | 🔒 Exact Street & Parcel Redacted • HAMILTON, MT (ZIP 59840 Sector) | MODERATE (39/100) | Violation Identified (12 qtrs NC) | 🔒 12 Qtrs Non-Compliance • Unlock → |
| HAMILTON STORE PARCEL 698800 FREE PREVIEW (LOW RISK) | NE CORNER HWY 93 & BLOOD LN, HAMILTON, MT 59840 | LOW (17/100) | Unknown (0 qtrs NC) | $0 |
| CLIFF REED INC FREE PREVIEW (LOW RISK) | 656 WILLOW CREEK RD, CORVALLIS, MT 59828 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
| EDDIE MOORE SITE FREE PREVIEW (LOW RISK) | OLD DARBY DUMP RD, DARBY, MT 59829 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
| DAVID L. TRENK ESTATE FREE PREVIEW (LOW RISK) | 520 HOLLOWAY LANE, FLORENCE, MT 59833 | LOW (16/100) | No Violation Identified (0 qtrs NC) | $0 |
Frequently Asked Questions — Ravalli County, Montana Environmental Due Diligence
How many EPA-regulated environmental sites are in Ravalli County, Montana?
Public U.S. EPA records track 542 regulated facilities in Ravalli County, Montana (ranking #8 of 65 jurisdictions in MT). Of those, 3 (0.6%) are classified in the High-Risk tier due to significant enforcement or chemical release history, and 22 (4.1%) have active non-compliance quarters.
Which ZIP codes and cities in Ravalli County have the highest regulated facility density?
Within Ravalli County, the highest concentrations of EPA-tracked facilities are located in ZIP 59840 (Hamilton, 177 sites), ZIP 59870 (Stevensville, 91 sites), ZIP 59875 (Victor, 60 sites), spanning municipal corridors including Hamilton (172 sites), Stevensville (90 sites), Victor (57 sites).
How many hazardous waste (RCRA) and toxic release (TRI) handlers operate in Ravalli County?
Across Ravalli County, 88 facilities (16.2% 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 Ravalli County, MT?
Geologic indoor air screening places Ravalli 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 Ravalli County, MT?
Federal records track 119 Safe Drinking Water (SDWIS) facilities, 333 Clean Water Act NPDES permits, and 95 impaired water dischargers in Ravalli County, alongside 1 historical FEMA federal disaster declarations (0 flood/storm events).
Does Ravalli County, MT have expansive clay soil or foundation risk?
USDA regional soil engineering screening for Ravalli County indicates a LOW 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.