Jefferson County, Missouri — Property Hazard, Flood Zone, Soil, Water & EPA Guide
What Are the Flood, Soil Foundation & EPA Risks in Jefferson County, MO?
In Jefferson County, Missouri, public U.S. EPA records track 1,578 regulated facilities (#8 of 190 in Missouri), including 37 (2.3%) High-Risk sites and $66,412 in federal penalties. Countywide due diligence also covers 98 Safe Drinking Water (SDWIS) facilities, 1,056 Clean Water NPDES permits, 1 FEMA Federal Disaster Declarations (1 flood/storm), USDA Soil Foundation Shrink-Swell (HIGH signal), and EPA Zone 2 — Moderate Potential (2.0 – 4.0 pCi/L).
Jefferson 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📊 Jefferson County, MO Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 03, 2026)Municipalities in Jefferson County
ZIP Codes in Jefferson County
Top EPA Regulated Facilities in Jefferson 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 • CRYSTAL CITY, MO (ZIP 63019 Sector) | HIGH (70/100) | Significant Violation (10 qtrs NC) | 🔒 Federal Penalty on File • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #2 | 🔒 Exact Street & Parcel Redacted • PEVELY, MO (ZIP 63070 Sector) | HIGH (70/100) | Significant Violation (12 qtrs NC) | 🔒 12 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #3 | 🔒 Exact Street & Parcel Redacted • PEVELY, MO (ZIP 63070 Sector) | HIGH (69/100) | Significant Violation (6 qtrs NC) | 🔒 6 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #4 | 🔒 Exact Street & Parcel Redacted • FESTUS, MO (ZIP 63028 Sector) | HIGH (65/100) | Significant Violation (8 qtrs NC) | 🔒 8 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #5 | 🔒 Exact Street & Parcel Redacted • HOUSE SPRINGS, MO (ZIP 63051 Sector) | HIGH (64/100) | Significant Violation (10 qtrs NC) | 🔒 10 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #6 | 🔒 Exact Street & Parcel Redacted • FESTUS, MO (ZIP 63028 Sector) | HIGH (64/100) | Significant Violation (9 qtrs NC) | 🔒 9 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #7 | 🔒 Exact Street & Parcel Redacted • ARNOLD, MO (ZIP 63010 Sector) | HIGH (64/100) | Significant Violation (10 qtrs NC) | 🔒 10 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #8 | 🔒 Exact Street & Parcel Redacted • DE SOTO, MO (ZIP 63020 Sector) | HIGH (64/100) | Significant Violation (8 qtrs NC) | 🔒 8 Qtrs Non-Compliance • Unlock → |
| BNSF RAILWAY CO FREE PREVIEW (LOW RISK) | MI POST 23.2 BNSF RAILWAY LINE, ARNOLD, MO 63010 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
| KOZENY WAGNER INC FREE PREVIEW (LOW RISK) | 951 W OUTER ROAD, ARNOLD, MO 63010 | LOW (16/100) | No Violation Identified (0 qtrs NC) | $0 |
| CQ MART FREE PREVIEW (LOW RISK) | 319 MAIN ST, FESTUS, MO 63028 | LOW (16/100) | No Violation Identified (0 qtrs NC) | $0 |
| WALMART SUPERCENTER #69 FREE PREVIEW (LOW RISK) | 650 S TRUMAN BLVD, FESTUS, MO 63028 | LOW (15/100) | No Violation Identified (0 qtrs NC) | $0 |
Frequently Asked Questions — Jefferson County, Missouri Environmental Due Diligence
How many EPA-regulated environmental sites are in Jefferson County, Missouri?
Public U.S. EPA records track 1,578 regulated facilities in Jefferson County, Missouri (ranking #8 of 190 jurisdictions in MO). Of those, 37 (2.3%) are classified in the High-Risk tier due to significant enforcement or chemical release history, and 120 (7.6%) have active non-compliance quarters.
Which ZIP codes and cities in Jefferson County have the highest regulated facility density?
Within Jefferson County, the highest concentrations of EPA-tracked facilities are located in ZIP 63010 (Arnold, 286 sites), ZIP 63028 (Festus, 237 sites), ZIP 63049 (High Ridge, 135 sites), spanning municipal corridors including Arnold (284 sites), Festus (229 sites), High Ridge (135 sites).
How many hazardous waste (RCRA) and toxic release (TRI) handlers operate in Jefferson County?
Across Jefferson County, 433 facilities (27.4% 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 Jefferson County, MO?
Geologic indoor air screening places Jefferson 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 Jefferson County, MO?
Federal records track 98 Safe Drinking Water (SDWIS) facilities, 1,056 Clean Water Act NPDES permits, and 37 impaired water dischargers in Jefferson County, alongside 1 historical FEMA federal disaster declarations (1 flood/storm events).
Does Jefferson County, MO have expansive clay soil or foundation risk?
USDA regional soil engineering screening for Jefferson County indicates a HIGH 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.