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13-SECTION MUNICIPAL PROPERTY, MARKET, FLOOD & HAZARD HUB • GREAT MILLS, MD

Great Mills, Maryland — Property Hazard, Flood Zone, Soil, Water & Market Guide

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What Are the Major Property, Flood, Soil & Environmental Risks in Great Mills, MD?

Public U.S. EPA records track 23 regulated facilities in Great Mills, Maryland (St. Marys County), including 0 High-Risk sites (0.0%) and 0 active violators. In addition to industrial waste, Great Mills properties are screened for Tap Water & Watershed Permits (14 systems), USDA Soil Foundation Shrink-Swell (MODERATE signal), 2 County FEMA Disaster Declarations, and EPA Zone 2 — Moderate Potential (2.0 – 4.0 pCi/L).

Total EPA Sites
23
High-Risk (0.0% vs 1.8% State)
0
Active Violators (0.0%)
0
Drinking & Clean Water
14
Federal Penalties
$0

Great Mills, MD 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
St. Marys County: 2 FEMA Declarations (1 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: 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
3 SDWIS Systems • 11 NPDES Permits
🔒 9 Impaired Water (303d) & 1 Violation Dockets Locked
Unlock Utility Violation Log →
☢️ EPA Radon & Karst Sinkhole
EPA Zone 2 — Moderate Potential (2.0 – 4.0 pCi/L)
Elevated Carbonate / Karst Sinkhole Belt — Monitor Foundation Settlement & Surface Depressions
🔒 0.25-Mi Vapor Intrusion Buffer Locked

📊 Great Mills, MD Statistical Risk Graphs & Multi-Hazard Telemetry

SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 03, 2026)
1. Municipal Regulatory & Water Program Mix
RCRA Hazardous Waste Generators 6 (26.1%)
Clean Water (NPDES) & Drinking Water (SDWIS) 14 (60.9%)
Active EPA Non-Compliance Dockets 0 (0.0%)
High-Risk Enforcement Facilities 0 (0.0%)
2. FEMA NRI & USGS Hazard Index (1–10) Very Low (42.6/100)
🌊 Flood Exposure 5/10 • Moderate Hazard
🔥 Wildfire Hazard 1/10 • Very Low Hazard
☀️ Extreme Heat 3/10 • Low Hazard
🌪️ Severe Wind / Storm 5/10 • Moderate Hazard
🫨 USGS Earthquake 2/10 • Low Seismic Hazard
3. City vs. County & State Benchmark
Great Mills High-Risk Rate 0.0%
St. Marys County Average 11.5%
Maryland (MD) Statewide Avg 1.8%
Unlock Street-Level Dossier: Paid report reveals exact facility names, distances in feet, USDA soil LEP %, water table depth, and parcel flood zone.
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ZIP Codes in Great Mills, MD

ZIP 20634 (23 sites • 0 High Risk)

Highest-Scored EPA Regulated Facilities in Great Mills, MD

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 Regulated EPA Enforcement Record #1 🔒 Exact Street & Parcel Redacted • GREAT MILLS, MD (ZIP 20634 Sector) MODERATE (34/100) No Violation Identified (0 qtrs NC) 🔒 Active Permit Dossier • Unlock →
🔒 Locked Regulated EPA Enforcement Record #2 🔒 Exact Street & Parcel Redacted • GREAT MILLS, MD (ZIP 20634 Sector) MODERATE (30/100) Resolved / Historical Non-Compliance (1 qtrs NC) 🔒 1 Qtrs Non-Compliance • Unlock →
🔒 Locked Regulated EPA Enforcement Record #3 🔒 Exact Street & Parcel Redacted • GREAT MILLS, MD (ZIP 20634 Sector) MODERATE (30/100) No Violation Identified (0 qtrs NC) 🔒 Active Permit Dossier • Unlock →
🔒 Locked Regulated EPA Enforcement Record #4 🔒 Exact Street & Parcel Redacted • GREAT MILLS, MD (ZIP 20634 Sector) MODERATE (30/100) No Violation Identified (0 qtrs NC) 🔒 Active Permit Dossier • Unlock →
GREAT MILLS HIGH SCHOOL FREE PREVIEW (LOW RISK) 21130 GREAT MILLS ROAD, GREAT MILLS, MD 20634 LOW (19/100) No Violation Identified (0 qtrs NC) $0
AUD PIT FREE PREVIEW (LOW RISK) 20215 FLAT IRON ROAD, GREAT MILLS, MD 20634 LOW (18/100) No Violation Identified (0 qtrs NC) $0
BEAN PIT # 1 FREE PREVIEW (LOW RISK) INDIAN HEAD ROAD, GREAT MILLS, MD 20634 LOW (18/100) No Violation Identified (0 qtrs NC) $0
CHAMPION USED AUTO PARTS, LLC FREE PREVIEW (LOW RISK) 45864 USHER LANE, GREAT MILLS, MD 20634 LOW (17/100) Unknown (0 qtrs NC) $0
🔒 Locked Regulated EPA Enforcement Record #5 🔒 Exact Street & Parcel Redacted • GREAT MILLS, MD (ZIP 20634 Sector) LOW (17/100) No Violation Identified (0 qtrs NC) 🔒 Active Permit Dossier • Unlock →
🔒 Locked Regulated EPA Enforcement Record #6 🔒 Exact Street & Parcel Redacted • GREAT MILLS, MD (ZIP 20692 Sector) LOW (17/100) No Violation Identified (0 qtrs NC) 🔒 Active Permit Dossier • Unlock →
🔒 Locked Regulated EPA Enforcement Record #7 🔒 Exact Street & Parcel Redacted • GREAT MILLS, MD (ZIP 20634 Sector) LOW (17/100) No Violation Identified (0 qtrs NC) 🔒 Active Permit Dossier • Unlock →
🔒 Locked Regulated EPA Enforcement Record #8 🔒 Exact Street & Parcel Redacted • GREAT MILLS, MD (ZIP 20634 Sector) LOW (16/100) No Violation Identified (0 qtrs NC) 🔒 Active Permit Dossier • Unlock →
🔒 + 11 Additional Regulated & Enforcement Records in Great Mills, MD Redacted from Public Directory Run 1-Mile Property Scan to Unlock All Records →

Frequently Asked Questions — Great Mills, Maryland Environmental Risk & Radon

How many EPA-regulated facilities are in Great Mills, MD?

U.S. EPA records track 23 regulated facilities in Great Mills, Maryland, including 0 high-risk sites (0.0%), 0 active violators (0.0%), and 6 RCRA hazardous waste handlers (26.1%).

Which ZIP codes in Great Mills, MD have the most EPA-tracked sites?

Within Great Mills, regulated facilities are primarily concentrated across ZIP 20634 (23 sites).

How can I check a specific house or commercial property in Great Mills, MD?

Enter the exact street address in Great Mills 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 Great Mills, MD and how many EPA water permits exist?

In Great Mills, MD, federal registries track 3 Safe Drinking Water (SDWIS) facilities, 11 Clean Water Act NPDES permits, and 9 impaired water body dischargers.

What is the soil foundation risk and FEMA flood disaster history in Great Mills, MD?

USDA regional soil screening for Great Mills indicates a MODERATE shrink-swell foundation signal, and St. Marys County has recorded 2 federal FEMA disaster declarations (1 flood/severe storm declarations). Run an address scan to unlock exact parcel soil LEP %, water table depth, and flood zone.

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