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 1,082 regulated facilities (#5 of 65 in Montana), including 12 (1.1%) High-Risk sites and $5,326,050 in federal penalties. Countywide due diligence also covers 153 Safe Drinking Water (SDWIS) facilities, 663 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 High-Risk EPA Enforcement Record #1 | 🔒 Exact Street & Parcel Redacted • HELENA, MT (ZIP 59601 Sector) | HIGH (74/100) | Violation Identified (11 qtrs NC) | 🔒 $100,000+ Federal Fine • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #2 | 🔒 Exact Street & Parcel Redacted • HELENA, MT (ZIP 59602 Sector) | HIGH (66/100) | Significant Violation (12 qtrs NC) | 🔒 12 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #3 | 🔒 Exact Street & Parcel Redacted • HELENA, MT (ZIP 59601 Sector) | HIGH (65/100) | Significant Violation (12 qtrs NC) | 🔒 12 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #4 | 🔒 Exact Street & Parcel Redacted • EAST HELENA, MT (ZIP 59635 Sector) | HIGH (64/100) | Significant Violation (8 qtrs NC) | 🔒 8 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #5 | 🔒 Exact Street & Parcel Redacted • HELENA, MT (ZIP 59602 Sector) | HIGH (64/100) | Significant Violation (12 qtrs NC) | 🔒 12 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #6 | 🔒 Exact Street & Parcel Redacted • WOLF CREEK, MT (ZIP 59648 Sector) | HIGH (64/100) | Significant Violation (10 qtrs NC) | 🔒 10 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #7 | 🔒 Exact Street & Parcel Redacted • HELENA, MT (ZIP 59602 Sector) | HIGH (64/100) | Significant Violation (3 qtrs NC) | 🔒 3 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #8 | 🔒 Exact Street & Parcel Redacted • HELENA, MT (ZIP 59602 Sector) | MODERATE (60/100) | Violation (12 qtrs NC) | 🔒 12 Qtrs Non-Compliance • Unlock → |
| COLUMBIA PAINT & COATINGS CO FREE PREVIEW (LOW RISK) | 1517 DODGE ST., HELENA, MT 59601 | LOW (19/100) | No Violation Identified (0 qtrs NC) | $0 |
| HELENA AUTO CENTER FREE PREVIEW (LOW RISK) | 3401 HWY 12 E, HELENA, MT 59604 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
| DECORATIVE INDUSTRIAL PLATING 10TH AVE FREE PREVIEW (LOW RISK) | S SIDE 3100 BLK 10TH AVE, HELENA, MT 59601 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
| DICK ANDERSON CONSTRUCTION FREE PREVIEW (LOW RISK) | 3424 US HWY 12 E, HELENA, MT 59601 | LOW (16/100) | 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, Montana?
Public U.S. EPA records track 1,082 regulated facilities in Lewis And Clark County, Montana (ranking #5 of 65 jurisdictions in MT). Of those, 12 (1.1%) are classified in the High-Risk tier due to significant enforcement or chemical release history, and 42 (3.9%) have active non-compliance quarters.
Which ZIP codes and cities in Lewis And Clark County have the highest regulated facility density?
Within Lewis And Clark County, the highest concentrations of EPA-tracked facilities are located in ZIP 59601 (Helena, 508 sites), ZIP 59602 (Helena, 212 sites), ZIP 59635 (East Helena, 103 sites), spanning municipal corridors including Helena (782 sites), East Helena (104 sites), Augusta (33 sites).
How many hazardous waste (RCRA) and toxic release (TRI) handlers operate in Lewis And Clark County?
Across Lewis And Clark County, 253 facilities (23.4% 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, MT?
Geologic indoor air screening places Lewis And Clark 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, MT?
Federal records track 153 Safe Drinking Water (SDWIS) facilities, 663 Clean Water Act NPDES permits, and 216 impaired water dischargers in Lewis And Clark 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.