St Louis County, Missouri — Property Hazard, Flood Zone, Soil, Water & EPA Guide
What Are the Flood, Soil Foundation & EPA Risks in St Louis County, MO?
In St Louis County, Missouri, public U.S. EPA records track 2,500 regulated facilities (#4 of 190 in Missouri), including 5 (0.2%) High-Risk sites and $5,320,499 in federal penalties. Countywide due diligence also covers 1 Safe Drinking Water (SDWIS) facilities, 136 Clean Water NPDES permits, 14 FEMA Federal Disaster Declarations (14 flood/storm), USDA Soil Foundation Shrink-Swell (MODERATE signal), and EPA Zone 2 — Moderate Potential (2.0 – 4.0 pCi/L).
St Louis 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 Louis County, MO Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 05, 2026)Municipalities in St Louis County
ZIP Codes in St Louis County
Top EPA Regulated Facilities in St Louis 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 • VALLEY PARK, MO (ZIP 63088 Sector) | HIGH (64/100) | Violation Identified (11 qtrs NC) | 🔒 11 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #2 | 🔒 Exact Street & Parcel Redacted • FENTON, MO (ZIP 63026 Sector) | MODERATE (61/100) | Violation (12 qtrs NC) | 🔒 12 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #3 | 🔒 Exact Street & Parcel Redacted • ST LOUIS, MO (ZIP 63119 Sector) | MODERATE (60/100) | Violation (12 qtrs NC) | 🔒 12 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #4 | 🔒 Exact Street & Parcel Redacted • ST LOUIS, MO (ZIP 63121 Sector) | MODERATE (53/100) | Violation Identified (10 qtrs NC) | 🔒 10 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #5 | 🔒 Exact Street & Parcel Redacted • ST LOUIS, MO (ZIP 63114 Sector) | MODERATE (53/100) | Violation Identified (12 qtrs NC) | 🔒 12 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #6 | 🔒 Exact Street & Parcel Redacted • ST LOUIS, MO (ZIP 63133 Sector) | MODERATE (46/100) | Violation (12 qtrs NC) | 🔒 12 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #7 | 🔒 Exact Street & Parcel Redacted • ST LOUIS, MO (ZIP 63136 Sector) | MODERATE (45/100) | Violation (12 qtrs NC) | 🔒 12 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #8 | 🔒 Exact Street & Parcel Redacted • SAINT LOUIS, MO (ZIP 63143 Sector) | MODERATE (39/100) | Resolved / Historical Non-Compliance (1 qtrs NC) | 🔒 $10,000+ Federal Fine • Unlock → |
| JENNINGS MAINTENANCE DEPT FREE PREVIEW (LOW RISK) | 5834 HODIAMONT, JENNINGS, MO 63136 | LOW (16/100) | No Violation Identified (0 qtrs NC) | $0 |
| APPLIED MICROSYSTEMS FREE PREVIEW (LOW RISK) | 9410 AERO SPACE DR, ST LOUIS, MO 63134 | LOW (15/100) | No Violation Identified (0 qtrs NC) | $0 |
Frequently Asked Questions — St Louis County, Missouri Environmental Due Diligence
How many EPA-regulated environmental sites are in St Louis County, Missouri?
Public U.S. EPA records track 2,500 regulated facilities in St Louis County, Missouri (ranking #4 of 190 jurisdictions in MO). Of those, 5 (0.2%) are classified in the High-Risk tier due to significant enforcement or chemical release history, and 9 (0.4%) have active non-compliance quarters.
Which ZIP codes and cities in St Louis County have the highest regulated facility density?
Within St Louis County, the highest concentrations of EPA-tracked facilities are located in ZIP 63026 (Fenton, 438 sites), ZIP 63110 (Saint Louis, 356 sites), ZIP 63005 (Chesterfield, 351 sites), spanning municipal corridors including St Louis (2,745 sites), Chesterfield (530 sites), Fenton (430 sites).
How many hazardous waste (RCRA) and toxic release (TRI) handlers operate in St Louis County?
Across St Louis County, 2,392 facilities (95.7% 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 Louis County, MO?
Geologic indoor air screening places St Louis County in EPA Zone 2 — Moderate Potential (2.0 – 4.0 pCi/L). Counties in EPA Radon Zone 2 have a predicted average indoor radon level between 2.0 and 4.0 pCi/L. Testing basement or ground-floor living areas is recommended during home inspection.
How many drinking water systems (SDWIS), impaired water bodies, and FEMA flood disasters are recorded in St Louis County, MO?
Federal records track 1 Safe Drinking Water (SDWIS) facilities, 136 Clean Water Act NPDES permits, and 42 impaired water dischargers in St Louis County, alongside 14 historical FEMA federal disaster declarations (14 flood/storm events).
Does St Louis County, MO have expansive clay soil or foundation risk?
USDA regional soil engineering screening for St Louis 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.