Custer County, Montana — Property Hazard, Flood Zone, Soil, Water & EPA Guide
What Are the Flood, Soil Foundation & EPA Risks in Custer County, MT?
In Custer County, Montana, public U.S. EPA records track 241 regulated facilities (#20 of 65 in Montana), including 4 (1.7%) High-Risk sites and $5,300,000 in federal penalties. Countywide due diligence also covers 13 Safe Drinking Water (SDWIS) facilities, 176 Clean Water NPDES permits, 22 FEMA Federal Disaster Declarations (8 flood/storm), USDA Soil Foundation Shrink-Swell (LOW signal), and EPA Zone 1 — High Potential (> 4.0 pCi/L).
Custer 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📊 Custer County, MT Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 05, 2026)Municipalities in Custer County
ZIP Codes in Custer County
Top EPA Regulated Facilities in Custer 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 • MILES CITY, MT (ZIP 59301 Sector) | HIGH (65/100) | Significant Violation (12 qtrs NC) | 🔒 12 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #2 | 🔒 Exact Street & Parcel Redacted • MILES CITY, MT (ZIP 59301 Sector) | HIGH (64/100) | Significant Violation (12 qtrs NC) | 🔒 12 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #3 | 🔒 Exact Street & Parcel Redacted • MILES CITY, MT (ZIP 59301 Sector) | HIGH (64/100) | Significant Violation (11 qtrs NC) | 🔒 11 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #4 | 🔒 Exact Street & Parcel Redacted • KINSEY, MT (ZIP 59338 Sector) | MODERATE (40/100) | Violation Identified (12 qtrs NC) | 🔒 12 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #5 | 🔒 Exact Street & Parcel Redacted • MILES CITY, MT (ZIP 59301 Sector) | MODERATE (39/100) | Violation Identified (12 qtrs NC) | 🔒 12 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #6 | 🔒 Exact Street & Parcel Redacted • MILES CITY, MT (ZIP 59301 Sector) | MODERATE (38/100) | Violation Identified (11 qtrs NC) | 🔒 11 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #7 | 🔒 Exact Street & Parcel Redacted • MILES CITY, MT (ZIP 59301 Sector) | MODERATE (37/100) | No Violation Identified (0 qtrs NC) | 🔒 $100,000+ Federal Fine • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #8 | 🔒 Exact Street & Parcel Redacted • MILES CITY, MT (ZIP 59301 Sector) | MODERATE (34/100) | Resolved / Historical Non-Compliance (1 qtrs NC) | 🔒 1 Qtrs Non-Compliance • Unlock → |
| TRANSCO RAILWAY PRODUCTS FREE PREVIEW (LOW RISK) | 901 N LAKE AVE, MILES CITY, MT 59301 | LOW (20/100) | No Violation Identified (0 qtrs NC) | $0 |
| USDA ARS MT FORT KEOGH LARRL MILES CITY FREE PREVIEW (LOW RISK) | W OF MILES CITY, MILES CITY, MT 59301 | LOW (19/100) | No Violation Identified (0 qtrs NC) | $0 |
| HOLY ROSARY HEALTH CARE - INTERMOUNTAIN HEALTH FREE PREVIEW (LOW RISK) | 2600 WILSON STREET, MILES CITY, MT 59301 | LOW (19/100) | No Violation Identified (0 qtrs NC) | $0 |
| CITY OF MILES CITY FREE PREVIEW (LOW RISK) | SWIMMING DOCKS, MILES CITY, MT 59301 | LOW (18/100) | No Violation Identified (0 qtrs NC) | $0 |
Frequently Asked Questions — Custer County, Montana Environmental Due Diligence
How many EPA-regulated environmental sites are in Custer County, Montana?
Public U.S. EPA records track 241 regulated facilities in Custer County, Montana (ranking #20 of 65 jurisdictions in MT). Of those, 4 (1.7%) are classified in the High-Risk tier due to significant enforcement or chemical release history, and 8 (3.3%) have active non-compliance quarters.
Which ZIP codes and cities in Custer County have the highest regulated facility density?
Within Custer County, the highest concentrations of EPA-tracked facilities are located in ZIP 59301 (Miles City, 222 sites), ZIP 59338 (Kinsey, 10 sites), ZIP 59336 (Ismay, 3 sites), spanning municipal corridors including Miles City (219 sites), Kinsey (11 sites), Ismay (3 sites).
How many hazardous waste (RCRA) and toxic release (TRI) handlers operate in Custer County?
Across Custer County, 52 facilities (21.6% 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 Custer County, MT?
Geologic indoor air screening places Custer 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 Custer County, MT?
Federal records track 13 Safe Drinking Water (SDWIS) facilities, 176 Clean Water Act NPDES permits, and 50 impaired water dischargers in Custer County, alongside 22 historical FEMA federal disaster declarations (8 flood/storm events).
Does Custer County, MT have expansive clay soil or foundation risk?
USDA regional soil engineering screening for Custer 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.