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13-SECTION MUNICIPAL PROPERTY, MARKET, FLOOD & HAZARD HUB • DUNCAN, OK

Duncan, Oklahoma — Property Hazard, Flood Zone, Soil, Water & Market Guide

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What Are the Major Property, Flood, Soil & Environmental Risks in Duncan, OK?

Public U.S. EPA records track 133 regulated facilities in Duncan, Oklahoma (Stephens County), including 1 High-Risk sites (0.8%) and 1 active violators. In addition to industrial waste, Duncan properties are screened for Tap Water & Watershed Permits (11 systems), USDA Soil Foundation Shrink-Swell (LOW signal), 6 County FEMA Disaster Declarations, and EPA Zone 3 — Low Potential (< 2.0 pCi/L).

Total EPA Sites
133
High-Risk (0.8% vs 1.5% State)
1
Active Violators (0.8%)
1
Drinking & Clean Water
11
Federal Penalties
$20,000

Duncan, OK 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
Stephens County: 6 FEMA Declarations (2 Flood/Storm)
🔒 Exact Parcel Flood Zone (AE / VE / X) & SFHA Insurance Status Locked
Check Property Flood Zone →
🪨 USDA Soil, Foundation & Water Table
Shrink-Swell Risk Signal: LOW • Pipe Corrosion: Moderate
🔒 Exact USDA Soil Series, Linear Extensibility (LEP %) & Water Table Depth (ft) Locked
Unlock Parcel Soil Test →
🚰 Tap Water (SDWIS) & PFAS Check
2 SDWIS Systems • 9 NPDES Permits
🔒 4 Impaired Water (303d) & 2 Violation Dockets Locked
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☢️ EPA Radon & Karst Sinkhole
EPA Zone 3 — Low Potential (< 2.0 pCi/L)
Low / Non-Karst Bedrock & Alluvial Formation
🔒 0.25-Mi Vapor Intrusion Buffer Locked

📊 Duncan, OK Statistical Risk Graphs & Multi-Hazard Telemetry

SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 05, 2026)
1. Municipal Regulatory & Water Program Mix
RCRA Hazardous Waste Generators 61 (45.9%)
Clean Water (NPDES) & Drinking Water (SDWIS) 11 (8.3%)
Active EPA Non-Compliance Dockets 1 (0.8%)
High-Risk Enforcement Facilities 1 (0.8%)
2. FEMA NRI & USGS Hazard Index (1–10) Relatively Low (65.9/100)
🌊 Flood Exposure 3/10 • Low Hazard
🔥 Wildfire Hazard 3/10 • Low Hazard
☀️ Extreme Heat 5/10 • Moderate Hazard
🌪️ Severe Wind / Storm 5/10 • Moderate Hazard
🫨 USGS Earthquake 3/10 • Low Hazard
3. City vs. County & State Benchmark
Duncan High-Risk Rate 0.8%
Stephens County Average 1.1%
Oklahoma (OK) Statewide Avg 1.5%
Unlock Street-Level Dossier: Paid report reveals exact facility names, distances in feet, USDA soil LEP %, water table depth, and parcel flood zone.
🔒 Scan a Property Address in Duncan →

ZIP Codes in Duncan, OK

ZIP 73533 (193 sites • 1 High Risk) ZIP 73534 (8 sites • 0 High Risk) ZIP 73536 (5 sites • 0 High Risk) ZIP 73535 (1 sites • 0 High Risk)

Highest-Scored EPA Regulated Facilities in Duncan, OK

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 • DUNCAN, OK (ZIP 73533 Sector) HIGH (64/100) Significant Violation (4 qtrs NC) 🔒 $10,000+ Federal Fine • Unlock →
🔒 Locked Regulated EPA Enforcement Record #2 🔒 Exact Street & Parcel Redacted • DUNCAN, OK (ZIP 73536 Sector) MODERATE (34/100) No Violation Identified (0 qtrs NC) 🔒 Active Permit Dossier • Unlock →
🔒 Locked Regulated EPA Enforcement Record #3 🔒 Exact Street & Parcel Redacted • DUNCAN, OK (ZIP 73533 Sector) MODERATE (30/100) Resolved / Historical Non-Compliance (5 qtrs NC) 🔒 5 Qtrs Non-Compliance • Unlock →
🔒 Locked Regulated EPA Enforcement Record #4 🔒 Exact Street & Parcel Redacted • DUNCAN, OK (ZIP 73533 Sector) MODERATE (30/100) No Violation Identified (0 qtrs NC) 🔒 Active Permit Dossier • Unlock →
🔒 Locked Regulated EPA Enforcement Record #5 🔒 Exact Street & Parcel Redacted • DUNCAN, OK (ZIP 73533 Sector) MODERATE (30/100) No Violation Identified (0 qtrs NC) 🔒 Active Permit Dossier • Unlock →
🔒 Locked Regulated EPA Enforcement Record #6 🔒 Exact Street & Parcel Redacted • DUNCAN, OK (ZIP 73533 Sector) MODERATE (30/100) Resolved / Historical Non-Compliance (1 qtrs NC) 🔒 1 Qtrs Non-Compliance • Unlock →
🔒 Locked Regulated EPA Enforcement Record #7 🔒 Exact Street & Parcel Redacted • DUNCAN, OK (ZIP 73533 Sector) MODERATE (30/100) No Violation Identified (0 qtrs NC) 🔒 Active Permit Dossier • Unlock →
🔒 Locked Regulated EPA Enforcement Record #8 🔒 Exact Street & Parcel Redacted • DUNCAN, OK (ZIP 73536 Sector) MODERATE (30/100) Resolved / Historical Non-Compliance (1 qtrs NC) 🔒 1 Qtrs Non-Compliance • Unlock →
HOWARD ENERGY PARTNERS / SHOLEM BOOSTER STATION FREE PREVIEW (LOW RISK) 173824 N. 3040 RD., DUNCAN, OK 73533 LOW (19/100) No Violation Identified (0 qtrs NC) $0
VALCO MFG / VALCO DUNCAN FACLTY FREE PREVIEW (LOW RISK) 1003 S 2ND STREET, DUNCAN, OK 73533 LOW (19/100) No Violation Identified (0 qtrs NC) $0
SOUTHWEST PLATING INC / DUNCAN PLATING FACILITY FREE PREVIEW (LOW RISK) 1202 LADOSS DR, DUNCAN, OK 73533 LOW (19/100) No Violation Identified (0 qtrs NC) $0
NOV HYDRA RIG DUNCAN FREE PREVIEW (LOW RISK) 1200 E HWY 7, DUNCAN, OK 73533 LOW (19/100) No Violation Identified (0 qtrs NC) $0
🔒 + 121 Additional Regulated & Enforcement Records in Duncan, OK Redacted from Public Directory Run 1-Mile Property Scan to Unlock All Records →

Frequently Asked Questions — Duncan, Oklahoma Environmental Risk & Radon

How many EPA-regulated facilities are in Duncan, OK?

U.S. EPA records track 133 regulated facilities in Duncan, Oklahoma, including 1 high-risk sites (0.8%), 1 active violators (0.8%), and 61 RCRA hazardous waste handlers (45.9%).

Which ZIP codes in Duncan, OK have the most EPA-tracked sites?

Within Duncan, regulated facilities are primarily concentrated across ZIP 73533 (193 sites), ZIP 73534 (8 sites), ZIP 73536 (5 sites), ZIP 73535 (1 sites).

How can I check a specific house or commercial property in Duncan, OK?

Enter the exact street address in Duncan into the FullPropertyReport radius scanner to screen all EPA ECHO, FRS, RCRA, TRI, USDA soil foundation shrink-swell, drinking water (SDWIS), FEMA flood zone, and county radon records within 0.5 to 3.0 miles.

Is tap water safe in Duncan, OK and how many EPA water permits exist?

In Duncan, OK, federal registries track 2 Safe Drinking Water (SDWIS) facilities, 9 Clean Water Act NPDES permits, and 4 impaired water body dischargers.

What is the soil foundation risk and FEMA flood disaster history in Duncan, OK?

USDA regional soil screening for Duncan indicates a LOW shrink-swell foundation signal, and Stephens County has recorded 6 federal FEMA disaster declarations (2 flood/severe storm declarations). Run an address scan to unlock exact parcel soil LEP %, water table depth, and flood zone.

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