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St Marys County, Maryland — Property Hazard, Flood Zone, Soil, Water & EPA Guide

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What Are the Flood, Soil Foundation & EPA Risks in St Marys County, MD?

In St Marys County, Maryland, public U.S. EPA records track 27 regulated facilities (#39 of 50 in Maryland), including 0 (0.0%) High-Risk sites and $0 in federal penalties. Countywide due diligence also covers 1 Safe Drinking Water (SDWIS) facilities, 3 Clean Water NPDES permits, 2 FEMA Federal Disaster Declarations (1 flood/storm), USDA Soil Foundation Shrink-Swell (MODERATE signal), and EPA Zone 2 — Moderate Potential (2.0 – 4.0 pCi/L).

Total EPA Sites (#39/50)
27
High-Risk (0.0% vs 1.8% State)
0
Active Violators (0.0%)
0
Drinking & Clean Water
4
Federal Penalties
$0

St Marys County, 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
2 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
1 SDWIS Systems • 3 NPDES Permits
🔒 1 Impaired Water (303d) & 2 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

📊 St Marys County, MD Statistical Risk Graphs & Multi-Hazard Telemetry

SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 03, 2026)
1. County Regulatory & Water Program Mix
RCRA Hazardous Waste Generators 8 (29.6%)
Clean Water (NPDES) & Drinking Water (SDWIS) 4 (14.8%)
Active EPA Non-Compliance Dockets 0 (0.0%)
High-Risk Enforcement Facilities 0 (0.0%)
2. FEMA NRI & USGS Hazard Index (1–10) Relatively Low (58.5/100)
🌊 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. County vs. State & National Benchmark
St Marys County High-Risk % 0.0%
Maryland (MD) Statewide Avg 1.8%
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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Municipalities in St Marys County

California (81) Chaptico (7)

Top EPA Regulated Facilities in St Marys County, 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 • CHAPTICO, MD (ZIP 20621 Sector) MODERATE (30/100) Resolved / Historical Non-Compliance (5 qtrs NC) 🔒 5 Qtrs Non-Compliance • Unlock →
🔒 Locked Regulated EPA Enforcement Record #2 🔒 Exact Street & Parcel Redacted • MORGANZA, MD (ZIP 20660 Sector) MODERATE (30/100) Resolved / Historical Non-Compliance (2 qtrs NC) 🔒 2 Qtrs Non-Compliance • Unlock →
🔒 Locked Regulated EPA Enforcement Record #3 🔒 Exact Street & Parcel Redacted • LEXINGTON PARK, MD (ZIP 20653 Sector) MODERATE (30/100) No Violation Identified (0 qtrs NC) 🔒 Active Permit Dossier • Unlock →
🔒 Locked Regulated EPA Enforcement Record #4 🔒 Exact Street & Parcel Redacted • CHARLOTTE HALL, MD (ZIP 20622 Sector) MODERATE (30/100) No Violation Identified (0 qtrs NC) 🔒 Active Permit Dossier • Unlock →
🔒 Locked Regulated EPA Enforcement Record #5 🔒 Exact Street & Parcel Redacted • LEXINGTON PARK, MD (ZIP 20653 Sector) MODERATE (30/100) No Violation Identified (0 qtrs NC) 🔒 Active Permit Dossier • Unlock →
🔒 Locked Regulated EPA Enforcement Record #6 🔒 Exact Street & Parcel Redacted • LEONARDTOWN, MD (ZIP 20650 Sector) MODERATE (30/100) No Violation Identified (0 qtrs NC) 🔒 Active Permit Dossier • Unlock →
🔒 Locked Regulated EPA Enforcement Record #7 🔒 Exact Street & Parcel Redacted • CALIFORNIA, MD (ZIP 20619 Sector) MODERATE (30/100) No Violation Identified (0 qtrs NC) 🔒 Active Permit Dossier • Unlock →
CHANEY ENTERPRISES - HOLLYWOOD FREE PREVIEW (LOW RISK) 23344 THREE NOTCH RD, CALIFORNIA, MD 20619 LOW (23/100) No Violation Identified (0 qtrs NC) $0
WAWA FOOD MARKET 587 FREE PREVIEW (LOW RISK) 22530 THREE NOTCH RD, LEXINGTON PARK, MD 20653 LOW (17/100) No Violation Identified (0 qtrs NC) $0
AGAPE AUTO SERVICE FREE PREVIEW (LOW RISK) 44040 AIRPORT VIEW DRIVE, HOLLYWOOD, MD 20636 LOW (17/100) No Violation Identified (0 qtrs NC) $0
ADAMS BODY SHOP FREE PREVIEW (LOW RISK) 23868 MERVELL DEAN ROAD, HOLLYWOOD, MD 20636 LOW (15/100) No Violation Identified (0 qtrs NC) $0
🔒 Locked Regulated EPA Enforcement Record #8 🔒 Exact Street & Parcel Redacted • MARYLAND, MD (ZIP 20600 Sector) LOW (13/100) No Violation Identified (0 qtrs NC) 🔒 Active Permit Dossier • Unlock →
🔒 + 15 Additional Regulated & Enforcement Records in St Marys County Redacted from Public Directory Run 1-Mile Property Scan to Unlock All Records →

Frequently Asked Questions — St Marys County, Maryland Environmental Due Diligence

How many EPA-regulated environmental sites are in St Marys County, Maryland?

Public U.S. EPA records track 27 regulated facilities in St Marys County, Maryland (ranking #39 of 50 jurisdictions in MD). Of those, 0 (0.0%) are classified in the High-Risk tier due to significant enforcement or chemical release history, and 0 (0.0%) have active non-compliance quarters.

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

Within St Marys County, the highest concentrations of EPA-tracked facilities are located in ZIP 20619 (California, 85 sites), ZIP 20621 (Chaptico, 10 sites), ZIP 20600 (Maryland, 2 sites), spanning municipal corridors including California (81 sites), Chaptico (7 sites).

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

Across St Marys County, 8 facilities (29.6% 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 St Marys County, MD?

Geologic indoor air screening places St Marys 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 St Marys County, MD?

Federal records track 1 Safe Drinking Water (SDWIS) facilities, 3 Clean Water Act NPDES permits, and 1 impaired water dischargers in St Marys County, alongside 2 historical FEMA federal disaster declarations (1 flood/storm events).

Does St Marys County, MD have expansive clay soil or foundation risk?

USDA regional soil engineering screening for St Marys 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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