Washington County, Missouri — Flood Zone, Water Quality, Soil Foundation, Radon & EPA Hazards
In Washington County, Missouri, public U.S. EPA records track 187 regulated facilities (#69 of 190 in Missouri), including 5 (2.7%) High-Risk sites and $6,750 in federal penalties. Countywide due diligence also covers 39 Safe Drinking Water (SDWIS) facilities, 106 Clean Water NPDES permits, 4 FEMA Federal Disaster Declarations (4 flood/storm), USDA Soil Foundation Shrink-Swell (MODERATE signal), and EPA Zone 2 — Moderate Potential (2.0 – 4.0 pCi/L).
Washington 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📊 Washington County, MO Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 01, 2026)Municipalities in Washington County
Top EPA Regulated Facilities in Washington 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 • MINERAL POINT, MO (ZIP 63660 Sector) | HIGH (64/100) | Significant Violation (10 qtrs NC) | 🔒 10 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #2 | 🔒 Exact Street & Parcel Redacted • CADET, MO (ZIP 63630 Sector) | HIGH (64/100) | Significant Violation (7 qtrs NC) | 🔒 7 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #3 | 🔒 Exact Street & Parcel Redacted • POTOSI, MO (ZIP 63664 Sector) | HIGH (64/100) | Significant Violation (4 qtrs NC) | 🔒 4 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #4 | 🔒 Exact Street & Parcel Redacted • BLACKWELL, MO (ZIP 63626 Sector) | HIGH (64/100) | Significant Violation (3 qtrs NC) | 🔒 3 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #5 | 🔒 Exact Street & Parcel Redacted • CALEDONIA, MO (ZIP 63631 Sector) | MODERATE (40/100) | Violation Identified (12 qtrs NC) | 🔒 12 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #6 | 🔒 Exact Street & Parcel Redacted • CADET, MO (ZIP 63630 Sector) | MODERATE (36/100) | Resolved / Historical Non-Compliance (6 qtrs NC) | 🔒 6 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #7 | 🔒 Exact Street & Parcel Redacted • BELGRADE, MO (ZIP 63622 Sector) | MODERATE (36/100) | Violation Identified (8 qtrs NC) | 🔒 8 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #8 | 🔒 Exact Street & Parcel Redacted • DES PERES, MO (ZIP 63131 Sector) | MODERATE (35/100) | Violation Identified (11 qtrs NC) | 🔒 11 Qtrs Non-Compliance • Unlock → |
| POTOSI R-3 HIGH SCHOOL FREE PREVIEW (LOW RISK) | 1 TROJAN DR, POTOSI, MO 63664 | LOW (20/100) | No Violation Identified (0 qtrs NC) | $0 |
| AMERENUE POTOSI WHQ FREE PREVIEW (LOW RISK) | 10040 AMEREN DR, MINERAL POINT, MO 63660 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
| AT&T LONG LINES FREE PREVIEW (LOW RISK) | RURAL ROUTE (SHIRLEY), POTOSI, MO 63664 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
| TRIMFOOT CO FREE PREVIEW (LOW RISK) | 1987 TRIMFOOT DRIVE, POTOSI, MO 63664 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
Frequently Asked Questions — Washington County, Missouri Environmental Due Diligence
How many EPA-regulated environmental sites are in Washington County, Missouri?
Public U.S. EPA records track 187 regulated facilities in Washington County, Missouri (ranking #69 of 190 jurisdictions in MO). Of those, 5 (2.7%) are classified in the High-Risk tier due to significant enforcement or chemical release history, and 17 (9.1%) have active non-compliance quarters.
Which ZIP codes and cities in Washington County have the highest regulated facility density?
Within Washington County, the highest concentrations of EPA-tracked facilities are located in ZIP 63664 (Potosi, 74 sites), ZIP 63660 (Mineral Point, 25 sites), ZIP 63630 (Cadet, 21 sites), spanning municipal corridors including Potosi (77 sites), Cadet (22 sites), Richwoods (14 sites).
How many hazardous waste (RCRA) and toxic release (TRI) handlers operate in Washington County?
Across Washington County, 26 facilities (13.9% 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 Washington County, MO?
Geologic indoor air screening places Washington 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 Washington County, MO?
Federal records track 39 Safe Drinking Water (SDWIS) facilities, 106 Clean Water Act NPDES permits, and 4 impaired water dischargers in Washington County, alongside 4 historical FEMA federal disaster declarations (4 flood/storm events).
Does Washington County, MO have expansive clay soil or foundation risk?
USDA regional soil engineering screening for Washington 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.