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Montgomery County, Pennsylvania — Property Hazard, Flood Zone, Soil, Water & EPA Guide

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What Are the Flood, Soil Foundation & EPA Risks in Montgomery County, PA?

In Montgomery County, Pennsylvania, public U.S. EPA records track 3,906 regulated facilities (#3 of 134 in Pennsylvania), including 89 (2.3%) High-Risk sites and $13,008,022 in federal penalties. Countywide due diligence also covers 290 Safe Drinking Water (SDWIS) facilities, 1,063 Clean Water NPDES permits, 1 FEMA Federal Disaster Declarations (1 flood/storm), USDA Soil Foundation Shrink-Swell (LOW signal), and EPA Zone 1 — High Potential (> 4.0 pCi/L).

Total EPA Sites (#3/134)
3,906
High-Risk (2.3% vs 2.7% State)
89
Active Violators (4.8%)
189
Drinking & Clean Water
1,353
Federal Penalties
$13,008,022

Montgomery County, PA 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
1 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: LOW • Pipe Corrosion: Low
🔒 Exact USDA Soil Series, Linear Extensibility (LEP %) & Water Table Depth (ft) Locked
Unlock Parcel Soil Test →
🚰 Tap Water (SDWIS) & PFAS Check
290 SDWIS Systems • 1,063 NPDES Permits
🔒 521 Impaired Water (303d) & 341 Violation Dockets Locked
Unlock Utility Violation Log →
☢️ EPA Radon & Karst Sinkhole
EPA Zone 1 — High Potential (> 4.0 pCi/L)
Elevated Carbonate / Karst Sinkhole Belt — Monitor Foundation Settlement & Surface Depressions
🔒 0.25-Mi Vapor Intrusion Buffer Locked

📊 Montgomery County, PA Statistical Risk Graphs & Multi-Hazard Telemetry

SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 05, 2026)
1. County Regulatory & Water Program Mix
RCRA Hazardous Waste Generators 2,668 (68.3%)
Clean Water (NPDES) & Drinking Water (SDWIS) 1,353 (34.6%)
Active EPA Non-Compliance Dockets 189 (4.8%)
High-Risk Enforcement Facilities 89 (2.3%)
2. FEMA NRI & USGS Hazard Index (1–10) Relatively High (96.8/100)
🌊 Flood Exposure 7/10 • High Hazard
🔥 Wildfire Hazard 1/10 • Very Low Hazard
☀️ Extreme Heat 7/10 • High Hazard
🌪️ Severe Wind / Storm 9/10 • Very High Hazard
🫨 USGS Earthquake 2/10 • Low Seismic Hazard
3. County vs. State & National Benchmark
Montgomery County High-Risk % 2.3%
Pennsylvania (PA) Statewide Avg 2.7%
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.
🔒 Scan a Property Address in Montgomery County →

ZIP Codes in Montgomery County

19406 — King Of Prussia (314) 19464 — Pottstown (265) 19401 — Norristown (208) 19403 — Norristown (203) 19446 — Lansdale (195) 19428 — Conshohocken (191) 19044 — Horsham (170) 19440 — Hatfield (141) 19454 — Lansdale Borough (138) 19090 — Willow Grove (138) 19002 — Broad Axe (131) 19006 — Huntingdon Valley (115) 19462 — Plymouth Meeting (108) 19468 — Royersford (102) 19034 — Fort Washington (95) 18964 — Souderton (95) 19040 — Hatboro (94) 19038 — North Hills (94) 18936 — Montgomeryville (91) 19422 — Center Square (71) 19004 — Bala Cynwyd (58) 19525 — Gilbertsville (57) 19001 — Abington (54) 19003 — Ardmore (54) 19473 — Schwenksville (47) 19031 — Flourtown (46) 19405 — Bridgeport (43) 19027 — Elkins Park (35) 18054 — Green Lane (32) 19474 — Upper Frederick Township (30) 19035 — Gladwyne (26) 19025 — Dresher (25) 19444 — Miquon (24) 19477 — Spring House (23) 19072 — Penn Valley (22) 18074 — Perkiomenville (22) 19443 — Kulpsville (19) 19490 — Worcester (18) 19095 — Wyncote (18) 19012 — Cheltenham (17) 19486 — Upper Gwynedd Township (15) 19404 — Norristown (14) 19435 — Frederick (10) 19066 — Merion (10) 19409 — Fairview Village (9) 18070 — Palm (9) 19408 — Eagleville (8) 18924 — Franconia (8) 19117 — Elkins Park (7) 19407 — Norristown (6) 19451 — Towamencin (5) 18958 — Salfordville (4) 19472 — Sassamansville (3) 19424 — Blue Bell (2) 19436 — Gwynedd (2) 18979 — Harleysville (2) 19453 — Mont Clare (2) 18971 — Tylersport (2) 19484 — Valley Forge (2) 19430 — Creamery (1) 19304 — King Of Prussia (1) 19452 — Miquon (1) 19836 — Montgomeryville (1) 16454 — North Wales (1) 19461 — Plymouth (1) 16465 — Pottstown (1) 19600 — Reading (1) 18957 — Salford (1) 19864 — Souderton (1) 19478 — Spring Mount (1) 18084 — Sumneytown (1)

Top EPA Regulated Facilities in Montgomery County, PA

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 • HATFIELD, PA (ZIP 19440 Sector) HIGH (93/100) Significant Violation (12 qtrs NC) 🔒 $100,000+ Federal Fine • Unlock →
🔒 Locked High-Risk EPA Enforcement Record #2 🔒 Exact Street & Parcel Redacted • COLLEGEVILLE, PA (ZIP 19426 Sector) HIGH (92/100) Significant Violation (10 qtrs NC) 🔒 $100,000+ Federal Fine • Unlock →
🔒 Locked High-Risk EPA Enforcement Record #3 🔒 Exact Street & Parcel Redacted • SOUDERTON, PA (ZIP 18964 Sector) HIGH (82/100) Violation Identified (11 qtrs NC) 🔒 $100,000+ Federal Fine • Unlock →
🔒 Locked High-Risk EPA Enforcement Record #4 🔒 Exact Street & Parcel Redacted • JENKINTOWN, PA (ZIP 19046 Sector) HIGH (79/100) Violation Identified (7 qtrs NC) 🔒 $100,000+ Federal Fine • Unlock →
🔒 Locked High-Risk EPA Enforcement Record #5 🔒 Exact Street & Parcel Redacted • POTTSTOWN, PA (ZIP 19464 Sector) HIGH (76/100) Violation Identified (12 qtrs NC) 🔒 $10,000+ Federal Fine • Unlock →
🔒 Locked High-Risk EPA Enforcement Record #6 🔒 Exact Street & Parcel Redacted • BOYERTOWN, PA (ZIP 19512 Sector) HIGH (75/100) Significant Violation (5 qtrs NC) 🔒 Federal Penalty on File • Unlock →
🔒 Locked High-Risk EPA Enforcement Record #7 🔒 Exact Street & Parcel Redacted • EAST GREENVILLE, PA (ZIP 18041 Sector) HIGH (71/100) Significant Violation (2 qtrs NC) 🔒 Federal Penalty on File • Unlock →
🔒 Locked High-Risk EPA Enforcement Record #8 🔒 Exact Street & Parcel Redacted • EAST GREENVILLE, PA (ZIP 18041 Sector) HIGH (71/100) Significant Violation (3 qtrs NC) 🔒 3 Qtrs Non-Compliance • Unlock →
WHITEMARSH COLLISION INC/PLYMOUTH MEETING FREE PREVIEW (LOW RISK) 4100 BUTLER PIKE, PLYMOUTH MEETING, PA 19462 LOW (19/100) No Violation Identified (0 qtrs NC) $0
CVS PHARMACY #2046 FREE PREVIEW (LOW RISK) 701 DEKALB ST, NORRISTOWN, PA 19401 LOW (17/100) No Violation Identified (0 qtrs NC) $0
TETLP BROAD AXE MLVS MP 10.1 FREE PREVIEW (LOW RISK) SKIPPACK PIKE & BUTLER PIKE, BROAD AXE, PA 19002 LOW (17/100) No Violation Identified (0 qtrs NC) $0
RMC ENVIRONMENTAL SERVICES FREE PREVIEW (LOW RISK) FRICKSLOCK RD RD #1, POTTSTOWN, PA 19464 LOW (16/100) No Violation Identified (0 qtrs NC) $0
🔒 + 3,894 Additional Regulated & Enforcement Records in Montgomery County Redacted from Public Directory Run 1-Mile Property Scan to Unlock All Records →

Frequently Asked Questions — Montgomery County, Pennsylvania Environmental Due Diligence

How many EPA-regulated environmental sites are in Montgomery County, Pennsylvania?

Public U.S. EPA records track 3,906 regulated facilities in Montgomery County, Pennsylvania (ranking #3 of 134 jurisdictions in PA). Of those, 89 (2.3%) are classified in the High-Risk tier due to significant enforcement or chemical release history, and 189 (4.8%) have active non-compliance quarters.

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

Within Montgomery County, the highest concentrations of EPA-tracked facilities are located in ZIP 19406 (King Of Prussia, 314 sites), ZIP 19464 (Pottstown, 265 sites), ZIP 19401 (Norristown, 208 sites), spanning municipal corridors including Norristown (330 sites), Pottstown (286 sites), King Of Prussia (281 sites).

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

Across Montgomery County, 2,668 facilities (68.3% 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 Montgomery County, PA?

Geologic indoor air screening places Montgomery County in EPA Zone 1 — High Potential (> 4.0 pCi/L). Counties in EPA Radon Zone 1 have a predicted average indoor radon screening level greater than 4.0 pCi/L (the EPA action threshold). Short-term or continuous indoor radon testing is strongly recommended prior to closing.

How many drinking water systems (SDWIS), impaired water bodies, and FEMA flood disasters are recorded in Montgomery County, PA?

Federal records track 290 Safe Drinking Water (SDWIS) facilities, 1,063 Clean Water Act NPDES permits, and 521 impaired water dischargers in Montgomery County, alongside 1 historical FEMA federal disaster declarations (1 flood/storm events).

Does Montgomery County, PA have expansive clay soil or foundation risk?

USDA regional soil engineering screening for Montgomery County indicates a LOW shrink-swell risk signal and steel pipe corrosivity rated Low. Run a street address scan to unlock the exact parcel soil series, LEP %, and water table depth.

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