Asotin County, Washington — Flood Zone, Water Quality, Soil Foundation, Radon & EPA Hazards
In Asotin County, Washington, public U.S. EPA records track 67 regulated facilities (#54 of 75 in Washington), including 6 (9.0%) High-Risk sites and $0 in federal penalties. Countywide due diligence also covers 6 Safe Drinking Water (SDWIS) facilities, 35 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).
Asotin County, WA 6-in-1 Flood, Soil Foundation, Tap Water & Radon Signals
🔒 Parcel-Level Soil LEP %, Water Table Depth & Flood Zone Require Street Address Scan📊 Asotin County, WA Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 01, 2026)Municipalities in Asotin County
ZIP Codes in Asotin County
Top EPA Regulated Facilities in Asotin County, WA
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 • CLARKSTON, WA (ZIP 99403 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 • ASOTIN, WA (ZIP 99402 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 • CLARKSTON, WA (ZIP 99403 Sector) | HIGH (64/100) | Significant Violation (11 qtrs NC) | 🔒 11 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #4 | 🔒 Exact Street & Parcel Redacted • CLARKSTON, WA (ZIP 99403 Sector) | HIGH (64/100) | Significant Violation (11 qtrs NC) | 🔒 11 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #5 | 🔒 Exact Street & Parcel Redacted • ASOTIN, WA (ZIP 99402 Sector) | HIGH (64/100) | Significant Violation (12 qtrs NC) | 🔒 12 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #6 | 🔒 Exact Street & Parcel Redacted • CLARKSTON, WA (ZIP 99403 Sector) | HIGH (64/100) | Significant Violation (11 qtrs NC) | 🔒 11 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #7 | 🔒 Exact Street & Parcel Redacted • CLARKSTON, WA (ZIP 99403 Sector) | MODERATE (46/100) | Violation Identified (12 qtrs NC) | 🔒 12 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #8 | 🔒 Exact Street & Parcel Redacted • CLARKSTON, WA (ZIP 99403 Sector) | MODERATE (45/100) | Violation Identified (12 qtrs NC) | 🔒 12 Qtrs Non-Compliance • Unlock → |
| MAGNUM DEVELOPMENT FREE PREVIEW (LOW RISK) | RESERVOIR RD, CLARKSTON, WA 99403 | LOW (18/100) | No Violation Identified (0 qtrs NC) | $0 |
| TEN MILE CREEK BRIDGE REPLACEMENT FREE PREVIEW (LOW RISK) | SNAKE RIVER ROAD, ASOTIN, WA 99402 | LOW (18/100) | No Violation Identified (0 qtrs NC) | $0 |
| SECOND STREET RECONSTRUCTION FREE PREVIEW (LOW RISK) | SECOND STREET, ASOTIN, WA 99402 | LOW (18/100) | No Violation Identified (0 qtrs NC) | $0 |
| ASOTIN CNTY FREE PREVIEW (LOW RISK) | 127 2ND ST, ASOTIN, WA 99402 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
Frequently Asked Questions — Asotin County, Washington Environmental Due Diligence
How many EPA-regulated environmental sites are in Asotin County, Washington?
Public U.S. EPA records track 67 regulated facilities in Asotin County, Washington (ranking #54 of 75 jurisdictions in WA). Of those, 6 (9.0%) are classified in the High-Risk tier due to significant enforcement or chemical release history, and 12 (17.9%) have active non-compliance quarters.
Which ZIP codes and cities in Asotin County have the highest regulated facility density?
Within Asotin County, the highest concentrations of EPA-tracked facilities are located in ZIP 99403 (Clarkston, 73 sites), ZIP 99402 (Asotin, 11 sites), ZIP 99401 (Anatone, 5 sites), spanning municipal corridors including Clarkston (71 sites), Anatone (5 sites), Rogersburg (1 sites).
How many hazardous waste (RCRA) and toxic release (TRI) handlers operate in Asotin County?
Across Asotin County, 36 facilities (53.7% 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 Asotin County, WA?
Geologic indoor air screening places Asotin 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 Asotin County, WA?
Federal records track 6 Safe Drinking Water (SDWIS) facilities, 35 Clean Water Act NPDES permits, and 10 impaired water dischargers in Asotin County, alongside 1 historical FEMA federal disaster declarations (1 flood/storm events).
Does Asotin County, WA have expansive clay soil or foundation risk?
USDA regional soil engineering screening for Asotin County indicates a HIGH 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.