St. Charles County, Missouri — Property Hazard, Flood Zone, Soil, Water & EPA Guide
What Are the Flood, Soil Foundation & EPA Risks in St. Charles County, MO?
In St. Charles County, Missouri, public U.S. EPA records track 252 regulated facilities (#54 of 190 in Missouri), including 3 (1.2%) High-Risk sites and $3,000 in federal penalties. Countywide due diligence also covers 3 Safe Drinking Water (SDWIS) facilities, 231 Clean Water NPDES permits, 1 FEMA Federal Disaster Declarations (1 flood/storm), USDA Soil Foundation Shrink-Swell (MODERATE signal), and EPA Zone 1 — High Potential (> 4.0 pCi/L).
St. Charles County, MO 6-in-1 Flood, Soil Foundation, Tap Water & Radon Signals
🔒 Parcel-Level Soil LEP %, Water Table Depth & Flood Zone Require Street Address Scan📊 St. Charles County, MO Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 05, 2026)Municipalities in St. Charles County
ZIP Codes in St. Charles County
Top EPA Regulated Facilities in St. Charles County, MO
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 • O'FALLON, MO (ZIP 63368 Sector) | HIGH (64/100) | Significant Violation (4 qtrs NC) | 🔒 4 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #2 | 🔒 Exact Street & Parcel Redacted • FORISTELL, MO (ZIP 63348 Sector) | HIGH (64/100) | Significant Violation (7 qtrs NC) | 🔒 7 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #3 | 🔒 Exact Street & Parcel Redacted • WENTZVILLE, MO (ZIP 63385 Sector) | MODERATE (46/100) | Resolved / Historical Non-Compliance (1 qtrs NC) | 🔒 Federal Penalty on File • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #4 | 🔒 Exact Street & Parcel Redacted • SAINT CHARLES, MO (ZIP 63303 Sector) | MODERATE (33/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #5 | 🔒 Exact Street & Parcel Redacted • ST. PETERS, MO (ZIP 63376 Sector) | MODERATE (30/100) | Resolved / Historical Non-Compliance (10 qtrs NC) | 🔒 10 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #6 | 🔒 Exact Street & Parcel Redacted • SAINT PETERS, MO (ZIP 63376 Sector) | MODERATE (30/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #7 | 🔒 Exact Street & Parcel Redacted • WENTZVILLE, MO (ZIP 63385 Sector) | MODERATE (30/100) | Resolved / Historical Non-Compliance (2 qtrs NC) | 🔒 2 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #8 | 🔒 Exact Street & Parcel Redacted • O'FALLON, MO (ZIP 63368 Sector) | MODERATE (30/100) | Resolved / Historical Non-Compliance (4 qtrs NC) | 🔒 4 Qtrs Non-Compliance • Unlock → |
| 3M FREE PREVIEW (LOW RISK) | 3047 ELM POINT INDUSTRIAL DR, SAINT CHARLES, MO 63301 | LOW (19/100) | No Violation Identified (0 qtrs NC) | $0 |
| THE MANORS AT WILMER VALLEY - PLAT 2,3,6 FREE PREVIEW (LOW RISK) | 430 WILMER MEADOW DRIVE, WENTZVILLE, MO 63385 | LOW (18/100) | No Violation Identified (0 qtrs NC) | $0 |
| LAND FREE PREVIEW (LOW RISK) | HWY DD, DARDENNE PRAIRIE, MO 63368 | LOW (18/100) | No Violation Identified (0 qtrs NC) | $0 |
| HAMPTON INN - WENTZVILLE BLUFFS FREE PREVIEW (LOW RISK) | 150 WENTZVILLE BLUFFS DRIVE, WENTZVILLE, MO 63385 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
Frequently Asked Questions — St. Charles County, Missouri Environmental Due Diligence
How many EPA-regulated environmental sites are in St. Charles County County, Missouri?
Public U.S. EPA records track 252 regulated facilities in St. Charles County County, Missouri (ranking #54 of 190 jurisdictions in MO). Of those, 3 (1.2%) are classified in the High-Risk tier due to significant enforcement or chemical release history, and 2 (0.8%) have active non-compliance quarters.
Which ZIP codes and cities in St. Charles County County have the highest regulated facility density?
Within St. Charles County County, the highest concentrations of EPA-tracked facilities are located in local postal sectors, spanning municipal corridors including St. Charles (286 sites), Weldon Spring (62 sites).
How many hazardous waste (RCRA) and toxic release (TRI) handlers operate in St. Charles County County?
Across St. Charles County County, 5 facilities (2.0% 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 St. Charles County County, MO?
Geologic indoor air screening places St. Charles 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 St. Charles County County, MO?
Federal records track 3 Safe Drinking Water (SDWIS) facilities, 231 Clean Water Act NPDES permits, and 21 impaired water dischargers in St. Charles County County, alongside 1 historical FEMA federal disaster declarations (1 flood/storm events).
Does St. Charles County, MO have expansive clay soil or foundation risk?
USDA regional soil engineering screening for St. Charles County indicates a MODERATE shrink-swell risk signal and steel pipe corrosivity rated High. Run a street address scan to unlock the exact parcel soil series, LEP %, and water table depth.