Lewis And Clark County, Montana — Property Hazard, Flood Zone, Soil, Water & EPA Guide
What Are the Flood, Soil Foundation & EPA Risks in Lewis And Clark County, MT?
In Lewis And Clark County, Montana, public U.S. EPA records track 6 regulated facilities (#69 of 69 in Montana), including 0 (0.0%) High-Risk sites and $0 in federal penalties. Countywide due diligence also covers 1 Safe Drinking Water (SDWIS) facilities, 1 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).
Lewis And Clark 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📊 Lewis And Clark County, MT Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 05, 2026)Municipalities in Lewis And Clark County
ZIP Codes in Lewis And Clark County
Top EPA Regulated Facilities in Lewis And Clark 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 Regulated EPA Enforcement Record #1 | 🔒 Exact Street & Parcel Redacted • EAST HELENA, MT (ZIP 59601 Sector) | MODERATE (30/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #2 | 🔒 Exact Street & Parcel Redacted • HELENA, MT (ZIP 59624 Sector) | MODERATE (22/100) | Resolved / Historical Non-Compliance (2 qtrs NC) | 🔒 2 Qtrs Non-Compliance • Unlock → |
| CITY OF HELENA FREE PREVIEW (LOW RISK) | 2108 CUSTER AVE EAST, HELENA, MT 59602 | LOW (12/100) | No Violation Identified (0 qtrs NC) | $0 |
| HELENA SAND & GRAVEL FREE PREVIEW (LOW RISK) | 2750 CANYON FERRY RD, HELENA, MT 59602 | LOW (10/100) | No Violation Identified (0 qtrs NC) | $0 |
| FORTERRA CONCRETE PRODUCTS - HELENA FREE PREVIEW (LOW RISK) | 2001 N BENTON AVE, HELENA, MT 59601 | LOW (9/100) | No Violation Identified (0 qtrs NC) | $0 |
Frequently Asked Questions — Lewis And Clark County, Montana Environmental Due Diligence
How many EPA-regulated environmental sites are in Lewis And Clark County County, Montana?
Public U.S. EPA records track 6 regulated facilities in Lewis And Clark County County, Montana (ranking #69 of 69 jurisdictions in MT). Of those, 0 (0.0%) are classified in the High-Risk tier due to significant enforcement or chemical release history, and 0 (0.0%) have active non-compliance quarters.
Which ZIP codes and cities in Lewis And Clark County County have the highest regulated facility density?
Within Lewis And Clark County County, the highest concentrations of EPA-tracked facilities are located in local postal sectors, spanning municipal corridors including Lewis And Clark County.
How many hazardous waste (RCRA) and toxic release (TRI) handlers operate in Lewis And Clark County County?
Across Lewis And Clark County 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 Lewis And Clark County County, MT?
Geologic indoor air screening places Lewis And Clark County 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 Lewis And Clark County County, MT?
Federal records track 1 Safe Drinking Water (SDWIS) facilities, 1 Clean Water Act NPDES permits, and 0 impaired water dischargers in Lewis And Clark County County, alongside 1 historical FEMA federal disaster declarations (0 flood/storm events).
Does Lewis And Clark County, MT have expansive clay soil or foundation risk?
USDA regional soil engineering screening for Lewis And Clark 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.