ZIP 02451 (Waltham, MA) — Flood Zone, Water Quality, Soil Foundation, Radon & EPA Hazards
ZIP code 02451 in Waltham, Massachusetts (Middlesex County) has 324 EPA-tracked facilities, including 1 High-Risk sites (0.3%), 3 active violators, and $11,688 in federal penalties. Beyond industrial pollution, properties in ZIP 02451 are screened across 1 historical Middlesex County FEMA disasters, USDA Soil Foundation Shrink-Swell (LOW signal), Tap Water & Watershed Permits (36), and EPA Zone 1 — High Potential (> 4.0 pCi/L).
ZIP 02451 (Waltham, 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 02451 (Waltham, MA) Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 02, 2026)ZIP 02451 Sector Screening Map (High-Risk Pin Coordinates Locked)
Exact street pins for 1 High-Risk and 3 Active Violation sites are redacted on public directory maps.
Regulated EPA Facilities in ZIP 02451 (Waltham, 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 • WALTHAM, MA (ZIP 02451 Sector) | HIGH (64/100) | Violation Identified (11 qtrs NC) | 🔒 $10,000+ Federal Fine • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #2 | 🔒 Exact Street & Parcel Redacted • WALTHAM, MA (ZIP 02451 Sector) | MODERATE (48/100) | Violation (12 qtrs NC) | 🔒 12 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #3 | 🔒 Exact Street & Parcel Redacted • WALTHAM, MA (ZIP 02451 Sector) | MODERATE (38/100) | Violation (4 qtrs NC) | 🔒 4 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #4 | 🔒 Exact Street & Parcel Redacted • WALTHAM, MA (ZIP 02451 Sector) | MODERATE (33/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #5 | 🔒 Exact Street & Parcel Redacted • WALTHAM, MA (ZIP 02451 Sector) | MODERATE (32/100) | Resolved / Historical Non-Compliance (2 qtrs NC) | 🔒 2 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #6 | 🔒 Exact Street & Parcel Redacted • WALTHAM, MA (ZIP 02451 Sector) | MODERATE (30/100) | Resolved / Historical Non-Compliance (7 qtrs NC) | 🔒 7 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #7 | 🔒 Exact Street & Parcel Redacted • WALTHAM, MA (ZIP 02451 Sector) | MODERATE (30/100) | Resolved / Historical Non-Compliance (3 qtrs NC) | 🔒 3 Qtrs Non-Compliance • Unlock → |
| 81 WYMAN PROJECT FREE PREVIEW (LOW RISK) | 81 WYMAN STREET, WALTHAM, MA 02451 | LOW (23/100) | No Violation Identified (0 qtrs NC) | $0 |
| CCNNE WALTHAM FREE PREVIEW (LOW RISK) | 80 SECOND AVE, WALTHAM, MA 02451 | LOW (19/100) | No Violation Identified (0 qtrs NC) | $0 |
| 404 WYMAN LLC FREE PREVIEW (LOW RISK) | 404 WYMAN STREET, WALTHAM, MA 02451 | LOW (18/100) | No Violation Identified (0 qtrs NC) | $0 |
| HONEYWELL BULL FREE PREVIEW (LOW RISK) | 200 SMITH ST, WALTHAM, MA 02451 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
| 🔒 Locked Regulated EPA Enforcement Record #8 | 🔒 Exact Street & Parcel Redacted • WALTHAM, MA (ZIP 02451 Sector) | LOW (17/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
Frequently Asked Questions — ZIP 02451 (Waltham, MA) EPA Dataset & Radon
DATASET: U.S. EPA ECHO • FRS • RCRAInfo • TRI (November 02, 2026)How many EPA-tracked environmental sites are in ZIP code 02451 (Waltham, MA)?
ZIP code 02451 (Waltham, MA) contains 324 EPA-tracked facilities, of which 1 (0.3%) are classified in the High-Risk tier, 3 (0.9%) have active compliance violations, and 275 (84.9%) handle RCRA hazardous waste.
How does ZIP 02451 compare to Middlesex County and Massachusetts averages?
In ZIP 02451, 0.3% 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 02451?
Geologic screening places ZIP 02451 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 02451 (Waltham, 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 02451 to unlock the exact parcel FEMA flood zone (AE / VE / X) and mandatory flood insurance status.
Does ZIP 02451 have expansive clay soil, foundation problems, or drinking water violations?
USDA regional soil screening for ZIP 02451 indicates a LOW shrink-swell risk signal. Within ZIP 02451, federal registries track 0 SDWIS drinking water facilities, 36 Clean Water NPDES permits, and 19 impaired water body dischargers. Unlock a full property report for exact soil LEP %, water table depth, and utility violation dockets.