PUBLIC DATA SOURCE: U.S. EPA ECHO, FRS, RCRA, TRI & FEMA NFHL 3,230,651 Regulated Sites • All 50 States • Data as of November 01, 2026
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6-IN-1 STATE ENVIRONMENTAL, WATER, SOIL & FLOOD HUB • MD

Maryland (MD) — Flood Zone, Tap Water Quality, Soil Foundation, Radon & EPA Hazards

Scan an Address in Maryland →

According to public U.S. EPA, USDA, and FEMA registries (current as of November 01, 2026), Maryland tracks 38,693 EPA-regulated facilities, including 709 High-Risk sites (1.8%), 1,110 active violators, and $120,828,690 in federal penalties. Statewide environmental due diligence also covers 7,379 Safe Drinking Water (SDWIS) facilities, 8,405 Clean Water NPDES permits, 2 historical FEMA disaster declarations, USDA Soil Shrink-Swell (MODERATE regional signal), and EPA Zone 2 — Moderate Potential (2.0 – 4.0 pCi/L).

Total EPA Sites
38,693
High-Risk Sites (1.8%)
709
Active Violators (2.9%)
1,110
Drinking & Clean Water
15,784
Federal Penalties
$120,828,690

Maryland (MD) 6-in-1 Flood, Soil Foundation, Tap Water & Radon Screening Signals

🔒 Parcel-Level Soil LEP %, Water Table Depth & Flood Zone Require Street Address Scan
🌊 Flood Zone & FEMA Disaster History
2 Statewide FEMA Declarations (1 Flood/Storm)
🔒 Exact Parcel Flood Zone (AE / VE / X) & SFHA Mandatory Insurance Status Locked
Check Property Flood Zone →
🪨 USDA Soil, Foundation & Water Table
Regional Shrink-Swell Signal: MODERATE • Pipe Corrosion: Low
🔒 Exact USDA Soil Series, Linear Extensibility (LEP %) & Water Table Depth (ft) Locked
Unlock Parcel Soil Test →
🚰 Tap Water (SDWIS) & PFAS Check
7,379 SDWIS Systems • 8,405 NPDES Permits
🔒 6,296 Impaired Water (303d) & 2,420 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

📊 Maryland (MD) Statistical Risk Graphs & Multi-Hazard Telemetry

SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 01, 2026)
1. Regulatory & Water Program Composition
RCRA Hazardous Waste Generators 16,182 (41.8%)
Clean Water (NPDES) & Drinking Water (SDWIS) 15,784 (40.8%)
Active EPA Non-Compliance Dockets 1,110 (2.9%)
High-Risk Enforcement Facilities 709 (1.8%)
2. FEMA NRI & USGS Hazard Index (1–10) Relatively High (95.0/100)
🌊 Flood Exposure 9/10 • Relatively High
🔥 Wildfire Hazard 2/10 • Very Low
☀️ Extreme Heat 10/10 • Relatively High
🌪️ Severe Wind / Storm 10/10 • Relatively High
🫨 USGS Earthquake 9/10 • Relatively Moderate
3. High-Risk Density vs. U.S. Baseline
Maryland (MD) High-Risk Rate 1.8%
U.S. National EPA Baseline 3.6%
Why Scan a Specific Street Address? Public state pages show aggregate counts only. A paid property report unlocks exact facility names & distances in feet, USDA soil LEP % & water table depth, utility water violations, and parcel FEMA flood zone.
🔒 Run 1-Mile Property Address Scan →

Major Municipal Environmental Directories in Maryland

Baltimore
5,327 sites
88 High
Rockville
984 sites
13 High
Frederick
884 sites
13 High
Silver Spring
787 sites
7 High
Hagerstown
692 sites
16 High
Gaithersburg
665 sites
9 High
Annapolis
618 sites
12 High
Salisbury
548 sites
14 High
Laurel
497 sites
16 High
Glen Burnie
473 sites
5 High
Columbia
472 sites
1 High
Bethesda
378 sites
7 High
Hyattsville
373 sites
8 High
Westminster
356 sites
8 High
Elkton
337 sites
9 High
Beltsville
330 sites
3 High
Upper Marlboro
317 sites
7 High
Bel Air
284 sites
4 High
Waldorf
282 sites
7 High
Cumberland
272 sites
6 High
Towson
268 sites
3 High
Easton
247 sites
9 High
Baltimore City
234 sites
1 High
Jessup
218 sites
11 High
Owings Mills
209 sites
1 High
Cockeysville
203 sites
5 High
Pasadena
203 sites
4 High
Capitol Heights
193 sites
0 High
Berlin
191 sites
3 High
Landover
189 sites
4 High
Aberdeen
187 sites
7 High
Cambridge
181 sites
6 High
Unknown
180 sites
1 High
Ellicott City
179 sites
4 High
Bowie
175 sites
1 High
Elkridge
175 sites
2 High
College Park
164 sites
3 High
Oakland
164 sites
2 High
Germantown
162 sites
2 High
Hanover
159 sites
0 High
Dundalk
156 sites
2 High
Clinton
154 sites
1 High
Maryland
144 sites
0 High
Chestertown
141 sites
6 High
Essex
138 sites
2 High
Havre De Grace
138 sites
2 High
Oxon Hill
138 sites
2 High
Catonsville
137 sites
2 High
North East
135 sites
3 High
Prince Frederick
134 sites
3 High
Suitland
131 sites
0 High
Millersville
131 sites
0 High
Reisterstown
130 sites
3 High
Federalsburg
127 sites
4 High
Edgewater
125 sites
4 High
Pocomoke City
125 sites
1 High
Ocean City
120 sites
1 High
Lanham
119 sites
1 High
Rosedale
118 sites
1 High
Middle River
115 sites
7 High

Counties in Maryland (106)

County Total Sites High Risk RCRA Waste
Baltimore County 5,749 72 2,872
Montgomery County 3,733 45 2,187
Anne Arundel County 3,146 64 1,472
Prince Georges County 2,431 19 1,132
Baltimore City County 2,357 46 1,742
Frederick County 1,563 29 686
Howard County 1,467 26 903
Harford County 1,466 35 735
Prince George'S County 1,419 37 790
Washington County 1,111 17 577
Carroll County 1,055 21 424
Cecil County 975 29 346
Wicomico County 877 21 367
Charles County 750 22 266
Allegany County 714 12 263
Worcester County 690 14 157
Baltimore (City) County 536 19 21
Calvert County 527 19 112
Garrett County 494 13 123
Caroline County 468 15 93
Dorchester County 453 21 103
Talbot County 425 15 152
St. Mary'S County 368 21 7
Queen Anne'S County 338 8 69
Kent County 314 12 93
Somerset County 281 7 43
Prince George S County 184 1 182
Saint Marys County 115 2 57
Queen Annes County 105 4 44
St Mary'S County 104 1 102
Prince George'S County 77 1 4
Anne Arundel County 58 2 5
Baltimore County 56 2 4
Wicomico County 49 1 0
Montgomery County 39 2 0
Frederick County 38 0 1
Worcester County 37 0 0
Somerset County 29 0 0
St Marys County 27 0 8
St. Marys County 26 3 3
Harford County 24 1 5
Washington County 19 1 0
Howard County 18 0 0
Cecil County 15 0 3
Queen Anne'S County 14 0 0
Charles County 13 0 1
St. Mary'S County 13 0 0
Garrett County 11 1 0
Carroll County 10 2 0
Dorchester County 10 0 0
Schenectady County 9 0 0
St. Mary S County 9 0 8
Allegany County 7 0 0
Caroline County 7 1 1
Queen Anne S County 5 0 5
Calvert County 4 0 0
Kent County 4 0 0
Talbot County 4 0 0
District Of Columbia County 3 0 0
Lancaster County 3 0 0
Morgan County 3 1 0
Sussex County 3 0 0
Bedford County 2 0 0
Crawford County 2 0 0
Fulton County 2 0 0
Glynn County 2 0 0
Hills County 2 0 0
Prince George''S County 2 0 1
Prince George;S County 2 0 0
Prince Georges County 2 0 1
Adams County 1 0 0
Alexandria City County 1 0 0
Baltimore(City) County 1 0 0
Berkeley County 1 0 0
Chester County 1 0 0
Culpeper County 1 0 0
Fairfax County 1 0 0
Franklin County 1 0 0
Gloucester County 1 0 0
Greene County 1 0 0
Henrico County 1 0 0
Herkimer County 1 0 0
Huntingdon County 1 0 0
Jefferson County 1 1 0
Lenawee County 1 0 0
Maricopa County 1 0 0
Mathews County 1 0 0
New Castle County 1 0 0
New Castle County 1 0 0
Page County 1 0 0
Philadelphia County 1 0 0
Preston County 1 0 0
Richmond City County 1 0 0
Rockingham County 1 1 0
Saint Mary'S County 1 0 0
Saint Mary'S County 1 0 1
Saratoga County 1 0 0
Schuyler County 1 0 0
Spotsylvania County 1 0 0
Stafford County 1 0 0
Tioga County 1 0 0
Volusia County 1 0 0
Williamson County 1 0 0
Wood County 1 0 0
Wyoming County 1 0 0
York County 1 0 0

Highest-Density ZIP Codes in Maryland

ZIP Code City Total Sites High Risk
21226 Baltimore 356 29
21230 Baltimore 539 16
20794 Jessup 227 11
21740 Hagerstown 574 10
21801 Salisbury 383 10
21220 Middle River 225 10
21401 Annapolis 482 9
21921 Elkton 357 9
20707 Laurel 244 9
21601 Easton 255 8
21030 Cockeysville 249 8
21224 Baltimore 555 7
21157 Westminster 331 7
21222 Baltimore 306 7
21613 Cambridge 206 7
21223 Baltimore 192 7
21001 Aberdeen 175 7
20850 Rockville 512 6
21502 Cumberland 325 6
20785 Landover 234 6
21620 Chestertown 157 6
21703 Frederick 145 6
21205 Baltimore 118 6
21788 Thurmont 99 6
20659 Mechanicsville 83 6
20657 Lusby 59 6
20879 Gaithersburg 242 5
20772 Upper Marlboro 231 5
20781 Hyattsville 204 5
20678 Prince Frederick 183 5
20646 La Plata 168 5
21037 Edgewater 148 5
21015 Bel Air 122 5
21085 Joppa 112 5
20602 Waldorf 95 5
21074 Hampstead 92 5
21903 Perryville 87 5
21871 Westover 56 5
18041 East Greenville 47 5
21634 Fishing Creek 26 5
21701 Frederick 422 4
21215 Baltimore 341 4
21061 Glen Burnie 340 4
21122 Pasadena 237 4
21804 Salisbury 186 4
21632 Federalsburg 138 4
21742 Hagerstown 126 4
21771 Mount Airy 118 4
21219 Sparrows Point 118 4
20650 Leonardtown 98 4
20744 Fort Washington 95 4
21536 Grantsville 77 4
20711 Lothian 61 4
21017 Belcamp 54 4
20754 Dunkirk 51 4
21152 Sparks 50 4
21660 Ridgley 36 4
20705 Beltsville 320 3
20852 Rockville 312 3
20877 Gaithersburg 232 3

Highest-Scored EPA Enforcement & Contamination Facilities in Maryland

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

Unlock Full Unredacted Dossier →
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 • SALISBURY, MD (ZIP 21804 Sector) HIGH (98/100) Significant Violation (12 qtrs NC) 🔒 $100,000+ Federal Fine • Unlock →
🔒 Locked High-Risk EPA Enforcement Record #2 🔒 Exact Street & Parcel Redacted • HAGERSTOWN, MD (ZIP 21742 Sector) HIGH (94/100) Significant Violation (12 qtrs NC) 🔒 $100,000+ Federal Fine • Unlock →
🔒 Locked High-Risk EPA Enforcement Record #3 🔒 Exact Street & Parcel Redacted • LOTHIAN, MD (ZIP 20711 Sector) HIGH (93/100) Significant Violation (12 qtrs NC) 🔒 $100,000+ Federal Fine • Unlock →
🔒 Locked High-Risk EPA Enforcement Record #4 🔒 Exact Street & Parcel Redacted • HIGHLANDTOWN, MD (ZIP 21224 Sector) HIGH (92/100) Significant Violation (12 qtrs NC) 🔒 $100,000+ Federal Fine • Unlock →
🔒 Locked High-Risk EPA Enforcement Record #5 🔒 Exact Street & Parcel Redacted • LINKWOOD, MD (ZIP 21835 Sector) HIGH (89/100) Significant Violation (12 qtrs NC) 🔒 $10,000+ Federal Fine • Unlock →
🔒 Locked High-Risk EPA Enforcement Record #6 🔒 Exact Street & Parcel Redacted • ELKRIDGE, MD (ZIP 21075 Sector) HIGH (88/100) Significant Violation (12 qtrs NC) 🔒 $10,000+ Federal Fine • Unlock →
🔒 Locked High-Risk EPA Enforcement Record #7 🔒 Exact Street & Parcel Redacted • BALTIMORE, MD (ZIP 21226 Sector) HIGH (86/100) Significant Violation (12 qtrs NC) 🔒 $10,000+ Federal Fine • Unlock →
🔒 Locked High-Risk EPA Enforcement Record #8 🔒 Exact Street & Parcel Redacted • POINT OF ROCKS, MD (ZIP 21777 Sector) HIGH (84/100) Significant Violation (10 qtrs NC) 🔒 $100,000+ Federal Fine • Unlock →
RENTAL TOOLS & EQUIPMENT CO INC FREE PREVIEW (LOW RISK) 9710 CAPITOL VIEW AV, SILVER SPRING, MD 20910 LOW (24/100) No Violation Identified (0 qtrs NC) $0
SHASTA BEVERAGES, INC. FREE PREVIEW (LOW RISK) 6750 MORAVIA PARK DRIVE, BALTIMORE, MD 21237 LOW (17/100) No Violation Identified (0 qtrs NC) $0
ARUNDEL MIDDLE SCHOOL FREE PREVIEW (LOW RISK) 1179 HAMMOND LANE, ODENTON, MD 21113 LOW (16/100) No Violation Identified (0 qtrs NC) $0
BOHAGER GOODHUES INC FREE PREVIEW (LOW RISK) 4315 EASTERN AVE, BALTIMORE, MD 21224 LOW (15/100) No Violation Identified (0 qtrs NC) $0
🔒 + 38,681 Additional Regulated & Enforcement Records in Maryland Redacted from Public Directory Run 1-Mile Property Scan to Unlock All Records →

Frequently Asked Questions — Maryland (MD) Environmental Due Diligence & EPA Dataset

How many EPA-regulated environmental sites and high-risk facilities are in Maryland?

Public U.S. EPA records track 38,693 regulated facilities across Maryland. Of those, 709 (1.8%) are classified in the High-Risk tier due to formal enforcement actions, penalties, or toxic chemical releases, and 1,110 (2.9%) have active non-compliance quarters.

Which counties and ZIP codes in Maryland have the highest concentration of EPA-regulated sites?

In Maryland, the highest regulated facility volumes are concentrated in Baltimore County (5,749 sites), Montgomery County (3,733 sites), Anne Arundel County (3,146 sites), Prince Georges County (2,431 sites), with key high-risk postal sectors including ZIP 21226 (Baltimore, 29 high-risk), ZIP 21230 (Baltimore, 16 high-risk), ZIP 20794 (Jessup, 11 high-risk), ZIP 21740 (Hagerstown, 10 high-risk).

How many drinking water systems (SDWIS), Clean Water permits, and FEMA disaster declarations are recorded in Maryland?

Statewide in Maryland, federal registries track 7,379 Safe Drinking Water (SDWIS) facilities, 8,405 Clean Water Act NPDES permits, and 6,296 impaired water body (303d) dischargers, alongside 2 historical FEMA disaster declarations.

What is the EPA Radon Zone and USDA Soil Foundation Risk for properties in Maryland?

Regional geologic screening places Maryland in EPA Zone 2 — Moderate Potential (2.0 – 4.0 pCi/L) with USDA regional soil shrink-swell rated MODERATE. Run a street address scan to unlock exact parcel soil LEP %, water table depth, and flood zone.