Chester County, Pennsylvania — Property Hazard, Flood Zone, Soil, Water & EPA Guide
What Are the Flood, Soil Foundation & EPA Risks in Chester County, PA?
In Chester County, Pennsylvania, public U.S. EPA records track 3,093 regulated facilities (#6 of 134 in Pennsylvania), including 53 (1.7%) High-Risk sites and $6,255,708 in federal penalties. Countywide due diligence also covers 398 Safe Drinking Water (SDWIS) facilities, 1,181 Clean Water NPDES permits, 1 FEMA Federal Disaster Declarations (1 flood/storm), USDA Soil Foundation Shrink-Swell (MODERATE signal), and EPA Zone 1 — High Potential (> 4.0 pCi/L).
Chester 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📊 Chester County, PA Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 05, 2026)Municipalities in Chester County
ZIP Codes in Chester County
Top EPA Regulated Facilities in Chester 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).
| 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 • WEST CHESTER, PA (ZIP 19382 Sector) | HIGH (71/100) | Significant Violation (3 qtrs NC) | 🔒 3 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #2 | 🔒 Exact Street & Parcel Redacted • MALVERN, PA (ZIP 19355 Sector) | HIGH (71/100) | Significant Violation (4 qtrs NC) | 🔒 4 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #3 | 🔒 Exact Street & Parcel Redacted • COATESVILLE, PA (ZIP 19320 Sector) | HIGH (71/100) | Significant Violation (4 qtrs NC) | 🔒 4 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #4 | 🔒 Exact Street & Parcel Redacted • PHOENIXVILLE, PA (ZIP 19460 Sector) | HIGH (70/100) | Significant Violation (11 qtrs NC) | 🔒 11 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #5 | 🔒 Exact Street & Parcel Redacted • ATGLEN, PA (ZIP 19310 Sector) | HIGH (70/100) | Significant Violation (10 qtrs NC) | 🔒 10 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #6 | 🔒 Exact Street & Parcel Redacted • WEST CHESTER, PA (ZIP 19382 Sector) | HIGH (70/100) | Significant Violation (11 qtrs NC) | 🔒 11 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #7 | 🔒 Exact Street & Parcel Redacted • HONEY BROOK, PA (ZIP 19344 Sector) | HIGH (69/100) | Significant Violation (10 qtrs NC) | 🔒 10 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #8 | 🔒 Exact Street & Parcel Redacted • SPRING CITY, PA (ZIP 19475 Sector) | HIGH (68/100) | Violation Identified (10 qtrs NC) | 🔒 $10,000+ Federal Fine • Unlock → |
| HEIDELBERG MTLS NORTHEAST PA/DOWNINGTOWN EAST CALN TWP PLT FREE PREVIEW (LOW RISK) | 499 QUARRY RD, DOWNINGTOWN, PA 19335 | LOW (18/100) | No Violation Identified (0 qtrs NC) | $0 |
| COLEY PONTIAC BUICK FREE PREVIEW (LOW RISK) | 421 W LINCOLN HWY, EXTON, PA 19341 | LOW (16/100) | No Violation Identified (0 qtrs NC) | $0 |
| ONE STOP TIME & AUTO SVC INC FREE PREVIEW (LOW RISK) | 1119 W CHESTER PK, WEST CHESTER, PA 19382 | LOW (16/100) | No Violation Identified (0 qtrs NC) | $0 |
| MODERN MUSHROOM FARMS FREE PREVIEW (LOW RISK) | 1330 NEWARK RD, TOUGHKENAMON, PA 19311 | LOW (15/100) | No Violation Identified (0 qtrs NC) | $0 |
Frequently Asked Questions — Chester County, Pennsylvania Environmental Due Diligence
How many EPA-regulated environmental sites are in Chester County, Pennsylvania?
Public U.S. EPA records track 3,093 regulated facilities in Chester County, Pennsylvania (ranking #6 of 134 jurisdictions in PA). Of those, 53 (1.7%) are classified in the High-Risk tier due to significant enforcement or chemical release history, and 155 (5.0%) have active non-compliance quarters.
Which ZIP codes and cities in Chester County have the highest regulated facility density?
Within Chester County, the highest concentrations of EPA-tracked facilities are located in ZIP 19355 (Malvern, 321 sites), ZIP 19380 (West Chester, 281 sites), ZIP 19320 (Coatesville, 271 sites), spanning municipal corridors including West Chester (437 sites), Malvern (225 sites), Exton (218 sites).
How many hazardous waste (RCRA) and toxic release (TRI) handlers operate in Chester County?
Across Chester County, 1,442 facilities (46.6% 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 Chester County, PA?
Geologic indoor air screening places Chester 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 Chester County, PA?
Federal records track 398 Safe Drinking Water (SDWIS) facilities, 1,181 Clean Water Act NPDES permits, and 693 impaired water dischargers in Chester County, alongside 1 historical FEMA federal disaster declarations (1 flood/storm events).
Does Chester County, PA have expansive clay soil or foundation risk?
USDA regional soil engineering screening for Chester County indicates a MODERATE 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.