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Natrona County, Wyoming — Property Hazard, Flood Zone, Soil, Water & EPA Guide

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What Are the Flood, Soil Foundation & EPA Risks in Natrona County, WY?

In Natrona County, Wyoming, public U.S. EPA records track 818 regulated facilities (#1 of 40 in Wyoming), including 7 (0.9%) High-Risk sites and $5,486,000 in federal penalties. Countywide due diligence also covers 56 Safe Drinking Water (SDWIS) facilities, 145 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).

Total EPA Sites (#1/40)
818
High-Risk (0.9% vs 1.3% State)
7
Active Violators (5.9%)
48
Drinking & Clean Water
201
Federal Penalties
$5,486,000

Natrona County, WY 6-in-1 Flood, Soil Foundation, Tap Water & Radon Signals

🔒 Parcel-Level Soil LEP %, Water Table Depth & Flood Zone Require Street Address Scan
🌊 Flood Zone & FEMA Disaster History
1 County FEMA Declarations (1 Flood/Storm)
🔒 Exact Parcel Flood Zone (AE / VE / X) & SFHA Insurance Requirement Locked
Check Property Flood Zone →
🪨 USDA Soil, Foundation & Water Table
Shrink-Swell Risk Signal: MODERATE • Pipe Corrosion: Moderate
🔒 Exact USDA Soil Series, Linear Extensibility (LEP %) & Water Table Depth (ft) Locked
Unlock Parcel Soil Test →
🚰 Tap Water (SDWIS) & PFAS Check
56 SDWIS Systems • 145 NPDES Permits
🔒 13 Impaired Water (303d) & 81 Violation Dockets Locked
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☢️ EPA Radon & Karst Sinkhole
EPA Zone 1 — High Potential (> 4.0 pCi/L)
Low / Non-Karst Bedrock & Alluvial Formation
🔒 0.25-Mi Vapor Intrusion Buffer Locked

📊 Natrona County, WY Statistical Risk Graphs & Multi-Hazard Telemetry

SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 05, 2026)
1. County Regulatory & Water Program Mix
RCRA Hazardous Waste Generators 553 (67.6%)
Clean Water (NPDES) & Drinking Water (SDWIS) 201 (24.6%)
Active EPA Non-Compliance Dockets 48 (5.9%)
High-Risk Enforcement Facilities 7 (0.9%)
2. FEMA NRI & USGS Hazard Index (1–10) Relatively Low (68.9/100)
🌊 Flood Exposure 5/10 • Moderate Hazard
🔥 Wildfire Hazard 5/10 • Moderate Hazard
☀️ Extreme Heat 1/10 • Very Low Hazard
🌪️ Severe Wind / Storm 3/10 • Low Hazard
🫨 USGS Earthquake 3/10 • Low Hazard
3. County vs. State & National Benchmark
Natrona County High-Risk % 0.9%
Wyoming (WY) Statewide Avg 1.3%
U.S. National EPA Baseline 3.6%
Unlock Street-Level Dossier: Full report reveals unredacted facility names, distances in feet, exact USDA soil LEP %, water table depth, and parcel flood zone.
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Top EPA Regulated Facilities in Natrona County, WY

100% of High-Risk & penalized facilities have facility names, street names, and dockets redacted (3 Low-Risk compliant records shown as Free Previews).

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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 • CASPER, WY (ZIP 82609 Sector) HIGH (71/100) Significant Violation (12 qtrs NC) 🔒 12 Qtrs Non-Compliance • Unlock →
🔒 Locked High-Risk EPA Enforcement Record #2 🔒 Exact Street & Parcel Redacted • (UNKNOWN CITY), WY (ZIP 00000 Sector) HIGH (64/100) Significant Violation (4 qtrs NC) 🔒 4 Qtrs Non-Compliance • Unlock →
🔒 Locked Regulated EPA Enforcement Record #3 🔒 Exact Street & Parcel Redacted • CASPER, WY (ZIP 82604 Sector) MODERATE (47/100) Violation Identified (12 qtrs NC) 🔒 12 Qtrs Non-Compliance • Unlock →
🔒 Locked Regulated EPA Enforcement Record #4 🔒 Exact Street & Parcel Redacted • CASPER, WY (ZIP 82601 Sector) MODERATE (45/100) Violation Identified (12 qtrs NC) 🔒 12 Qtrs Non-Compliance • Unlock →
🔒 Locked Regulated EPA Enforcement Record #5 🔒 Exact Street & Parcel Redacted • CASPER, WY (ZIP 82604 Sector) MODERATE (44/100) Violation Identified (12 qtrs NC) 🔒 12 Qtrs Non-Compliance • Unlock →
🔒 Locked Regulated EPA Enforcement Record #6 🔒 Exact Street & Parcel Redacted • CASPER, WY (ZIP 82601 Sector) MODERATE (43/100) Resolved / Historical Non-Compliance (11 qtrs NC) 🔒 $10,000+ Federal Fine • Unlock →
🔒 Locked Regulated EPA Enforcement Record #7 🔒 Exact Street & Parcel Redacted • MILLS, WY (ZIP 82644 Sector) MODERATE (43/100) Violation Identified (11 qtrs NC) 🔒 11 Qtrs Non-Compliance • Unlock →
🔒 Locked Regulated EPA Enforcement Record #8 🔒 Exact Street & Parcel Redacted • EVANSVILLE, WY (ZIP 82636 Sector) MODERATE (42/100) Violation (2 qtrs NC) 🔒 2 Qtrs Non-Compliance • Unlock →
TERENE AUTOMOTIVE FREE PREVIEW (LOW RISK) 731 GLENN RD, CASPER, WY 82601 LOW (17/100) No Violation Identified (0 qtrs NC) $0
NORTH UTILITIES EQUIP YARD FREE PREVIEW (LOW RISK) 630 W MIDWEST, CASPER, WY 82602 LOW (17/100) No Violation Identified (0 qtrs NC) $0
MCMURRY BROS. CO. FREE PREVIEW (LOW RISK) 7058 SALT CREEK ROUTE, CASPER, WY 82601 LOW (16/100) No Violation Identified (0 qtrs NC) $0
SACK BROTHERS BODY SHOP FREE PREVIEW (LOW RISK) 1149 E YELLOWSTONE HWY, CASPER, WY 82601 LOW (15/100) No Violation Identified (0 qtrs NC) $0
🔒 + 806 Additional Regulated & Enforcement Records in Natrona County Redacted from Public Directory Run 1-Mile Property Scan to Unlock All Records →

Frequently Asked Questions — Natrona County, Wyoming Environmental Due Diligence

How many EPA-regulated environmental sites are in Natrona County, Wyoming?

Public U.S. EPA records track 818 regulated facilities in Natrona County, Wyoming (ranking #1 of 40 jurisdictions in WY). Of those, 7 (0.9%) are classified in the High-Risk tier due to significant enforcement or chemical release history, and 48 (5.9%) have active non-compliance quarters.

Which ZIP codes and cities in Natrona County have the highest regulated facility density?

Within Natrona County, the highest concentrations of EPA-tracked facilities are located in ZIP 82601 (Casper, 304 sites), ZIP 82609 (Casper, 65 sites), ZIP 82602 (Casper, 62 sites), spanning municipal corridors including Casper (632 sites), Mills (66 sites), Evansville (59 sites).

How many hazardous waste (RCRA) and toxic release (TRI) handlers operate in Natrona County?

Across Natrona County, 553 facilities (67.6% 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 Natrona County, WY?

Geologic indoor air screening places Natrona 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 Natrona County, WY?

Federal records track 56 Safe Drinking Water (SDWIS) facilities, 145 Clean Water Act NPDES permits, and 13 impaired water dischargers in Natrona County, alongside 1 historical FEMA federal disaster declarations (1 flood/storm events).

Does Natrona County, WY have expansive clay soil or foundation risk?

USDA regional soil engineering screening for Natrona County indicates a MODERATE 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.

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