ZIP 02421 (Lexington, MA) — Flood Zone, Water Quality, Soil Foundation, Radon & EPA Hazards
ZIP code 02421 in Lexington, Massachusetts (Middlesex County) has 196 EPA-tracked facilities, including 2 High-Risk sites (1.0%), 3 active violators, and $43,120 in federal penalties. Beyond industrial pollution, properties in ZIP 02421 are screened across 1 historical Middlesex County FEMA disasters, USDA Soil Foundation Shrink-Swell (LOW signal), Tap Water & Watershed Permits (45), and EPA Zone 1 — High Potential (> 4.0 pCi/L).
ZIP 02421 (Lexington, MA) 6-in-1 Flood, Soil Foundation, Tap Water & Radon Signals
🔒 Parcel-Level Soil LEP %, Water Table Depth & Flood Zone Require Street Address Scan📊 ZIP 02421 (Lexington, MA) Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 01, 2026)ZIP 02421 Sector Screening Map (High-Risk Pin Coordinates Locked)
Exact street pins for 2 High-Risk and 3 Active Violation sites are redacted on public directory maps.
Regulated EPA Facilities in ZIP 02421 (Lexington, MA)
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 • LEXINGTON, MA (ZIP 02421 Sector) | HIGH (90/100) | Significant Violation (12 qtrs NC) | 🔒 $10,000+ Federal Fine • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #2 | 🔒 Exact Street & Parcel Redacted • LEXING, MA (ZIP 02421 Sector) | HIGH (70/100) | Significant Violation (2 qtrs NC) | 🔒 2 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #3 | 🔒 Exact Street & Parcel Redacted • LEXINGTON, MA (ZIP 02421 Sector) | MODERATE (40/100) | Resolved / Historical Non-Compliance (10 qtrs NC) | 🔒 10 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #4 | 🔒 Exact Street & Parcel Redacted • LEXINGTON, MA (ZIP 02421 Sector) | MODERATE (35/100) | Resolved / Historical Non-Compliance (3 qtrs NC) | 🔒 3 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #5 | 🔒 Exact Street & Parcel Redacted • LEXINGTON, MA (ZIP 02421 Sector) | MODERATE (30/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #6 | 🔒 Exact Street & Parcel Redacted • LEXINGTON, MA (ZIP 02421 Sector) | MODERATE (30/100) | Resolved / Historical Non-Compliance (4 qtrs NC) | 🔒 4 Qtrs Non-Compliance • Unlock → |
| 17 HARTWELL AVE FREE PREVIEW (LOW RISK) | 17 HARTWELL AVE, LEXINGTON, MA 02421 | LOW (24/100) | No Violation Identified (0 qtrs NC) | $0 |
| VARIAN VACUUM TECHNOLOGIES FREE PREVIEW (LOW RISK) | 121 HARTWELL AVENUE, LEXINGTON, MA 02421 | LOW (23/100) | No Violation Identified (0 qtrs NC) | $0 |
| NOVO NORDISK US R AND D FREE PREVIEW (LOW RISK) | 33 HAYDEN AVE, LEXINGTON, MA 02421 | LOW (19/100) | No Violation Identified (0 qtrs NC) | $0 |
| HCP/KING HAYDEN CAMPUS LLC FREE PREVIEW (LOW RISK) | 65 HAYDEN AVE, LEXINGTON, MA 02421 | LOW (19/100) | No Violation Identified (0 qtrs NC) | $0 |
| 🔒 Locked Regulated EPA Enforcement Record #7 | 🔒 Exact Street & Parcel Redacted • LEXINGTON, MA (ZIP 02421 Sector) | LOW (19/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #8 | 🔒 Exact Street & Parcel Redacted • LEXINGTON, MA (ZIP 02421 Sector) | LOW (19/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
Frequently Asked Questions — ZIP 02421 (Lexington, MA) EPA Dataset & Radon
DATASET: U.S. EPA ECHO • FRS • RCRAInfo • TRI (November 01, 2026)How many EPA-tracked environmental sites are in ZIP code 02421 (Lexington, MA)?
ZIP code 02421 (Lexington, MA) contains 196 EPA-tracked facilities, of which 2 (1.0%) are classified in the High-Risk tier, 3 (1.5%) have active compliance violations, and 155 (79.1%) handle RCRA hazardous waste.
How does ZIP 02421 compare to Middlesex County and Massachusetts averages?
In ZIP 02421, 1.0% of regulated sites are rated High Risk, compared to 1.0% across Middlesex County and 1.3% statewide in Massachusetts.
What is the EPA Radon Zone and ASTM Phase I screening radius for ZIP 02421?
Geologic screening places ZIP 02421 in EPA Zone 1 — High Potential (> 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 02421 (Lexington, MA) in a FEMA flood zone and what is the flood disaster history?
Middlesex County has recorded 1 historical FEMA federal disaster declarations (1 flood, hurricane, or severe storm declarations). Run a street address scan in ZIP 02421 to unlock the exact parcel FEMA flood zone (AE / VE / X) and mandatory flood insurance status.
Does ZIP 02421 have expansive clay soil, foundation problems, or drinking water violations?
USDA regional soil screening for ZIP 02421 indicates a LOW shrink-swell risk signal. Within ZIP 02421, federal registries track 0 SDWIS drinking water facilities, 45 Clean Water NPDES permits, and 24 impaired water body dischargers. Unlock a full property report for exact soil LEP %, water table depth, and utility violation dockets.