ZIP 77340 (Huntsville, TX) — Flood Zone, Water Quality, Soil Foundation, Radon & EPA Hazards
ZIP code 77340 in Huntsville, Texas (Walker County) has 383 EPA-tracked facilities, including 10 High-Risk sites (2.6%), 6 active violators, and $226,570 in federal penalties. Beyond industrial pollution, properties in ZIP 77340 are screened across 4 historical Walker County FEMA disasters, USDA Soil Foundation Shrink-Swell (LOW signal), Tap Water & Watershed Permits (331), and EPA Zone 3 — Low Potential (< 2.0 pCi/L).
ZIP 77340 (Huntsville, TX) 6-in-1 Flood, Soil Foundation, Tap Water & Radon Signals
🔒 Parcel-Level Soil LEP %, Water Table Depth & Flood Zone Require Street Address Scan📊 ZIP 77340 (Huntsville, TX) Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 01, 2026)ZIP 77340 Sector Screening Map (High-Risk Pin Coordinates Locked)
Exact street pins for 10 High-Risk and 6 Active Violation sites are redacted on public directory maps.
Regulated EPA Facilities in ZIP 77340 (Huntsville, TX)
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 • HUNTSVILLE, TX (ZIP 77340 Sector) | HIGH (69/100) | Significant Violation (11 qtrs NC) | 🔒 $10,000+ Federal Fine • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #2 | 🔒 Exact Street & Parcel Redacted • HUNTSVILLE, TX (ZIP 77340 Sector) | HIGH (68/100) | Significant Violation (11 qtrs NC) | 🔒 11 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #3 | 🔒 Exact Street & Parcel Redacted • HUNTSVILLE, TX (ZIP 77340 Sector) | HIGH (64/100) | No Violation Identified (0 qtrs NC) | 🔒 $10,000+ Federal Fine • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #4 | 🔒 Exact Street & Parcel Redacted • HUNTSVILLE, TX (ZIP 77340 Sector) | HIGH (64/100) | Violation Identified (6 qtrs NC) | 🔒 $10,000+ Federal Fine • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #5 | 🔒 Exact Street & Parcel Redacted • HUNTSVILLE, TX (ZIP 77340 Sector) | HIGH (64/100) | Resolved / Historical Non-Compliance (6 qtrs NC) | 🔒 $10,000+ Federal Fine • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #6 | 🔒 Exact Street & Parcel Redacted • ANDERSON COUNTY, TX (ZIP 77340 Sector) | HIGH (64/100) | Resolved / Historical Non-Compliance (7 qtrs NC) | 🔒 $10,000+ Federal Fine • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #7 | 🔒 Exact Street & Parcel Redacted • HUNTSVILLE, TX (ZIP 77340 Sector) | HIGH (64/100) | Significant Violation (9 qtrs NC) | 🔒 $10,000+ Federal Fine • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #8 | 🔒 Exact Street & Parcel Redacted • HUNTSVILLE, TX (ZIP 77340 Sector) | HIGH (64/100) | Significant Violation (1 qtrs NC) | 🔒 1 Qtrs Non-Compliance • Unlock → |
| HYPONEX HUNTSVILLE THE SCOTTS FREE PREVIEW (LOW RISK) | 1284 STATE HWY 75N, HUNTSVILLE, TX 77340 | LOW (19/100) | No Violation Identified (0 qtrs NC) | $0 |
| ROBERT AND TONNETTE FREE PREVIEW (LOW RISK) | 318 WINCHESTER RD, HUNTSVILLE, TX 77340 | LOW (18/100) | No Violation Identified (0 qtrs NC) | $0 |
| HUNTSVILLE MEMORIAL HOSPITAL FREE PREVIEW (LOW RISK) | 485 IH 45 S, HUNTSVILLE, TX 77340 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
| HANSON AGGREGATES WEST INC FREE PREVIEW (LOW RISK) | 4 MI OFF FM 980, HUNTSVILLE, TX 77340 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
Frequently Asked Questions — ZIP 77340 (Huntsville, TX) EPA Dataset & Radon
DATASET: U.S. EPA ECHO • FRS • RCRAInfo • TRI (November 01, 2026)How many EPA-tracked environmental sites are in ZIP code 77340 (Huntsville, TX)?
ZIP code 77340 (Huntsville, TX) contains 383 EPA-tracked facilities, of which 10 (2.6%) are classified in the High-Risk tier, 6 (1.6%) have active compliance violations, and 46 (12.0%) handle RCRA hazardous waste.
How does ZIP 77340 compare to Walker County and Texas averages?
In ZIP 77340, 2.6% of regulated sites are rated High Risk, compared to 4.3% across Walker County and 1.6% statewide in Texas.
What is the EPA Radon Zone and ASTM Phase I screening radius for ZIP 77340?
Geologic screening places ZIP 77340 in EPA Zone 3 — Low Potential (< 2.0 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 77340 (Huntsville, TX) in a FEMA flood zone and what is the flood disaster history?
Walker County has recorded 4 historical FEMA federal disaster declarations (2 flood, hurricane, or severe storm declarations). Run a street address scan in ZIP 77340 to unlock the exact parcel FEMA flood zone (AE / VE / X) and mandatory flood insurance status.
Does ZIP 77340 have expansive clay soil, foundation problems, or drinking water violations?
USDA regional soil screening for ZIP 77340 indicates a LOW shrink-swell risk signal. Within ZIP 77340, federal registries track 2 SDWIS drinking water facilities, 329 Clean Water NPDES permits, and 2 impaired water body dischargers. Unlock a full property report for exact soil LEP %, water table depth, and utility violation dockets.