ZIP 78634 (Hutto, TX) — Flood Zone, Water Quality, Soil Foundation, Radon & EPA Hazards
ZIP code 78634 in Hutto, Texas (Williamson County) has 456 EPA-tracked facilities, including 6 High-Risk sites (1.3%), 4 active violators, and $462,103 in federal penalties. Beyond industrial pollution, properties in ZIP 78634 are screened across 4 historical Williamson County FEMA disasters, USDA Soil Foundation Shrink-Swell (HIGH signal), Tap Water & Watershed Permits (438), and EPA Zone 3 — Low Potential (< 2.0 pCi/L).
ZIP 78634 (Hutto, 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 78634 (Hutto, TX) Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 01, 2026)ZIP 78634 Sector Screening Map (High-Risk Pin Coordinates Locked)
Exact street pins for 6 High-Risk and 4 Active Violation sites are redacted on public directory maps.
Regulated EPA Facilities in ZIP 78634 (Hutto, 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 • HUTTO, TX (ZIP 78634 Sector) | HIGH (64/100) | No Violation Identified (0 qtrs NC) | 🔒 $100,000+ Federal Fine • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #2 | 🔒 Exact Street & Parcel Redacted • HUTTO, TX (ZIP 78634 Sector) | HIGH (64/100) | No Violation Identified (0 qtrs NC) | 🔒 $100,000+ Federal Fine • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #3 | 🔒 Exact Street & Parcel Redacted • HUTTO, TX (ZIP 78634 Sector) | HIGH (64/100) | No Violation Identified (0 qtrs NC) | 🔒 $10,000+ Federal Fine • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #4 | 🔒 Exact Street & Parcel Redacted • HUTTO, TX (ZIP 78634 Sector) | MODERATE (38/100) | Violation Identified (9 qtrs NC) | 🔒 9 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #5 | 🔒 Exact Street & Parcel Redacted • HUTTO, TX (ZIP 78634 Sector) | MODERATE (33/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #6 | 🔒 Exact Street & Parcel Redacted • HUTTO, TX (ZIP 78634 Sector) | MODERATE (31/100) | Violation Identified (5 qtrs NC) | 🔒 5 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #7 | 🔒 Exact Street & Parcel Redacted • HUTTO, TX (ZIP 78634 Sector) | MODERATE (30/100) | Resolved / Historical Non-Compliance (6 qtrs NC) | 🔒 6 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #8 | 🔒 Exact Street & Parcel Redacted • HUTTO, TX (ZIP 78634 Sector) | MODERATE (30/100) | Violation Identified (1 qtrs NC) | 🔒 1 Qtrs Non-Compliance • Unlock → |
| HALCYON WASTEWATER TREATMENT PLANT FREE PREVIEW (LOW RISK) | APPROX 0.42 M NW FROM INTERX OF FM 3349 & FM 1660, HUTTO, TX 78634 | LOW (19/100) | No Violation Identified (0 qtrs NC) | $0 |
| NARROWS MULTIFAMILY FREE PREVIEW (LOW RISK) | APPROX. .5 MILES SOUTH OF 1660 ON THE WEST SIDE OF, HUTTO, TX 78634 | LOW (19/100) | No Violation Identified (0 qtrs NC) | $0 |
| HUTTO CROSSING PHS. 4 SEC. 9B FREE PREVIEW (LOW RISK) | SOUTH OF KNOWLES DR. & SIMMENTAL LOOP, HUTTO, TX 78634 | LOW (19/100) | No Violation Identified (0 qtrs NC) | $0 |
| BROOKLANDS SUBDIVISION SEC 3 LIFT STATION & FORCE MAIN FREE PREVIEW (LOW RISK) | FROM IH-35 EAST ON HIGHWAY 79 TO FM 1660 SOUTH OF, HUTTO, TX 78634 | LOW (19/100) | No Violation Identified (0 qtrs NC) | $0 |
Frequently Asked Questions — ZIP 78634 (Hutto, 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 78634 (Hutto, TX)?
ZIP code 78634 (Hutto, TX) contains 456 EPA-tracked facilities, of which 6 (1.3%) are classified in the High-Risk tier, 4 (0.9%) have active compliance violations, and 16 (3.5%) handle RCRA hazardous waste.
How does ZIP 78634 compare to Williamson County and Texas averages?
In ZIP 78634, 1.3% of regulated sites are rated High Risk, compared to 1.4% across Williamson County and 1.6% statewide in Texas.
What is the EPA Radon Zone and ASTM Phase I screening radius for ZIP 78634?
Geologic screening places ZIP 78634 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 78634 (Hutto, TX) in a FEMA flood zone and what is the flood disaster history?
Williamson County has recorded 4 historical FEMA federal disaster declarations (1 flood, hurricane, or severe storm declarations). Run a street address scan in ZIP 78634 to unlock the exact parcel FEMA flood zone (AE / VE / X) and mandatory flood insurance status.
Does ZIP 78634 have expansive clay soil, foundation problems, or drinking water violations?
USDA regional soil screening for ZIP 78634 indicates a HIGH shrink-swell risk signal. Within ZIP 78634, federal registries track 2 SDWIS drinking water facilities, 436 Clean Water NPDES permits, and 21 impaired water body dischargers. Unlock a full property report for exact soil LEP %, water table depth, and utility violation dockets.