ZIP 21666 (Stevensville, MD) — Flood Zone, Water Quality, Soil Foundation, Radon & EPA Hazards
ZIP code 21666 in Stevensville, Maryland (Queen Anne'S County) has 79 EPA-tracked facilities, including 3 High-Risk sites (3.8%), 5 active violators, and $0 in federal penalties. Beyond industrial pollution, properties in ZIP 21666 are screened across 1 historical Queen Anne'S County FEMA disasters, USDA Soil Foundation Shrink-Swell (MODERATE signal), Tap Water & Watershed Permits (46), and EPA Zone 2 — Moderate Potential (2.0 – 4.0 pCi/L).
ZIP 21666 (Stevensville, MD) 6-in-1 Flood, Soil Foundation, Tap Water & Radon Signals
🔒 Parcel-Level Soil LEP %, Water Table Depth & Flood Zone Require Street Address Scan📊 ZIP 21666 (Stevensville, MD) Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 01, 2026)ZIP 21666 Sector Screening Map (High-Risk Pin Coordinates Locked)
Exact street pins for 3 High-Risk and 5 Active Violation sites are redacted on public directory maps.
Regulated EPA Facilities in ZIP 21666 (Stevensville, MD)
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 Score (0–100) | Compliance Status | Enforcement / Unlock |
|---|---|---|---|---|
| 🔒 Locked High-Risk EPA Enforcement Record #1 | 🔒 Exact Street & Parcel Redacted • STEVENSVILLE, MD (ZIP 21666 Sector) | HIGH (64/100) | Significant Violation (11 qtrs NC) | 🔒 11 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #2 | 🔒 Exact Street & Parcel Redacted • STEVENSVILLE, MD (ZIP 21666 Sector) | HIGH (64/100) | Significant Violation (7 qtrs NC) | 🔒 7 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #3 | 🔒 Exact Street & Parcel Redacted • STEVENSVILLE, MD (ZIP 21666 Sector) | HIGH (64/100) | Significant Violation (3 qtrs NC) | 🔒 3 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #4 | 🔒 Exact Street & Parcel Redacted • CHESTER, MD (ZIP 21666 Sector) | MODERATE (33/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #5 | 🔒 Exact Street & Parcel Redacted • STEVENSVILLE, MD (ZIP 21666 Sector) | MODERATE (30/100) | Resolved / Historical Non-Compliance (7 qtrs NC) | 🔒 7 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #6 | 🔒 Exact Street & Parcel Redacted • STEVENSVILLE, MD (ZIP 21666 Sector) | MODERATE (30/100) | Resolved / Historical Non-Compliance (5 qtrs NC) | 🔒 5 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #7 | 🔒 Exact Street & Parcel Redacted • STEVENSVILLE, MD (ZIP 21666 Sector) | MODERATE (30/100) | Resolved / Historical Non-Compliance (1 qtrs NC) | 🔒 1 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #8 | 🔒 Exact Street & Parcel Redacted • STEVENSVILLE, MD (ZIP 21666 Sector) | MODERATE (30/100) | Resolved / Historical Non-Compliance (1 qtrs NC) | 🔒 1 Qtrs Non-Compliance • Unlock → |
| CROWN STATION MD - 134 FREE PREVIEW (LOW RISK) | 400 THOMPSON CREEK ROAD, STEVENSVILLE, MD 21666 | LOW (24/100) | No Violation Identified (0 qtrs NC) | $0 |
| KENTMORR HARBOUR MARINA FREE PREVIEW (LOW RISK) | 910 KENTMORR ROAD, STEVENSVILLE, MD 21666 | LOW (20/100) | No Violation Identified (0 qtrs NC) | $0 |
| DONKAT PROPERTIES, LLC FREE PREVIEW (LOW RISK) | MARION QUIMBY DRIVE, STEVENSVILLE, MD 21666 | LOW (19/100) | No Violation Identified (0 qtrs NC) | $0 |
| KNSG WASTEWATER TREATMENT PLANT FREE PREVIEW (LOW RISK) | 310 BATEAU DRIVE, STEVENSVILLE, MD 21666 | LOW (18/100) | No Violation Identified (0 qtrs NC) | $0 |
Frequently Asked Questions — ZIP 21666 (Stevensville, MD) EPA Dataset & Radon
DATASET: U.S. EPA ECHO • FRS • RCRAInfo • TRI (November 01, 2026)How many EPA-tracked environmental sites are in ZIP code 21666 (Stevensville, MD)?
ZIP code 21666 (Stevensville, MD) contains 79 EPA-tracked facilities, of which 3 (3.8%) are classified in the High-Risk tier, 5 (6.3%) have active compliance violations, and 28 (35.4%) handle RCRA hazardous waste.
How does ZIP 21666 compare to Queen Anne'S County and Maryland averages?
In ZIP 21666, 3.8% of regulated sites are rated High Risk, compared to 2.4% across Queen Anne'S County and 1.8% statewide in Maryland.
What is the EPA Radon Zone and ASTM Phase I screening radius for ZIP 21666?
Geologic screening places ZIP 21666 in EPA Zone 2 — Moderate Potential (2.0 – 4.0 pCi/L). Property buyers should screen a 0.25-mile immediate buffer for vapor-intrusion sources and a 1.0-mile radius for CERCLA/RCRA sites.
Is ZIP 21666 (Stevensville, MD) in a FEMA flood zone and what is the flood disaster history?
Queen Anne'S County has recorded 1 historical FEMA federal disaster declarations (0 flood, hurricane, or severe storm declarations). Run a street address scan in ZIP 21666 to unlock the exact parcel FEMA flood zone (AE / VE / X) and mandatory flood insurance status.
Does ZIP 21666 have expansive clay soil, foundation problems, or drinking water violations?
USDA regional soil screening for ZIP 21666 indicates a MODERATE shrink-swell risk signal. Within ZIP 21666, federal registries track 23 SDWIS drinking water facilities, 23 Clean Water NPDES permits, and 12 impaired water body dischargers. Unlock a full property report for exact soil LEP %, water table depth, and utility violation dockets.