ZIP 50138 (Knoxville, IA) — Flood Zone, Water Quality, Soil Foundation, Radon & EPA Hazards
ZIP code 50138 in Knoxville, Iowa (Marion County) has 60 EPA-tracked facilities, including 2 High-Risk sites (3.3%), 3 active violators, and $108,976 in federal penalties. Beyond industrial pollution, properties in ZIP 50138 are screened across 7 historical Marion County FEMA disasters, USDA Soil Foundation Shrink-Swell (HIGH signal), Tap Water & Watershed Permits (9), and EPA Zone 1 — High Potential (> 4.0 pCi/L).
ZIP 50138 (Knoxville, IA) 6-in-1 Flood, Soil Foundation, Tap Water & Radon Signals
🔒 Parcel-Level Soil LEP %, Water Table Depth & Flood Zone Require Street Address Scan📊 ZIP 50138 (Knoxville, IA) Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 01, 2026)ZIP 50138 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 50138 (Knoxville, IA)
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 • KNOXVILLE, IA (ZIP 50138 Sector) | HIGH (64/100) | Significant Violation (12 qtrs NC) | 🔒 12 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #2 | 🔒 Exact Street & Parcel Redacted • KNOXVILLE, IA (ZIP 50138 Sector) | MODERATE (49/100) | Violation Identified (1 qtrs NC) | 🔒 1 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #3 | 🔒 Exact Street & Parcel Redacted • KNOXVILLE, IA (ZIP 50138 Sector) | MODERATE (34/100) | No Violation Identified (0 qtrs NC) | 🔒 $100,000+ Federal Fine • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #4 | 🔒 Exact Street & Parcel Redacted • KNOXVILLE, IA (ZIP 50138 Sector) | MODERATE (34/100) | Violation Identified (10 qtrs NC) | 🔒 10 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #5 | 🔒 Exact Street & Parcel Redacted • KNOXVILLE, IA (ZIP 50138 Sector) | MODERATE (30/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #6 | 🔒 Exact Street & Parcel Redacted • KNOXVILLE, IA (ZIP 50138 Sector) | MODERATE (30/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| VETERANS ADMIN FREE PREVIEW (LOW RISK) | 1515 WEST PLEASANT STREET, KNOXVILLE, IA 50138 | LOW (19/100) | No Violation Identified (0 qtrs NC) | $0 |
| WESTBERGS INC FREE PREVIEW (LOW RISK) | 1574 HIGHWAY 14, KNOXVILLE, IA 50138 | LOW (19/100) | No Violation Identified (0 qtrs NC) | $0 |
| BEN SHINN TRUCKING INC FREE PREVIEW (LOW RISK) | 1501 EAST MAIN STREET, KNOXVILLE, IA 50138 | LOW (18/100) | No Violation Identified (0 qtrs NC) | $0 |
| NATURAL GAS PIPELINE CO OF AMERICA - STATION 198 FREE PREVIEW (LOW RISK) | 1616 165TH AVE(NEWBOLD&OREGAN), KNOXVILLE, IA 50138 | LOW (18/100) | No Violation Identified (0 qtrs NC) | $0 |
| 🔒 Locked Regulated EPA Enforcement Record #7 | 🔒 Exact Street & Parcel Redacted • KNOXVILLE, IA (ZIP 50138 Sector) | LOW (17/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #8 | 🔒 Exact Street & Parcel Redacted • KNOXVILLE, IA (ZIP 50138 Sector) | LOW (17/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
Frequently Asked Questions — ZIP 50138 (Knoxville, IA) EPA Dataset & Radon
DATASET: U.S. EPA ECHO • FRS • RCRAInfo • TRI (November 01, 2026)How many EPA-tracked environmental sites are in ZIP code 50138 (Knoxville, IA)?
ZIP code 50138 (Knoxville, IA) contains 60 EPA-tracked facilities, of which 2 (3.3%) are classified in the High-Risk tier, 3 (5.0%) have active compliance violations, and 38 (63.3%) handle RCRA hazardous waste.
How does ZIP 50138 compare to Marion County and Iowa averages?
In ZIP 50138, 3.3% of regulated sites are rated High Risk, compared to 2.3% across Marion County and 1.6% statewide in Iowa.
What is the EPA Radon Zone and ASTM Phase I screening radius for ZIP 50138?
Geologic screening places ZIP 50138 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 50138 (Knoxville, IA) in a FEMA flood zone and what is the flood disaster history?
Marion County has recorded 7 historical FEMA federal disaster declarations (6 flood, hurricane, or severe storm declarations). Run a street address scan in ZIP 50138 to unlock the exact parcel FEMA flood zone (AE / VE / X) and mandatory flood insurance status.
Does ZIP 50138 have expansive clay soil, foundation problems, or drinking water violations?
USDA regional soil screening for ZIP 50138 indicates a HIGH shrink-swell risk signal. Within ZIP 50138, federal registries track 2 SDWIS drinking water facilities, 7 Clean Water NPDES permits, and 1 impaired water body dischargers. Unlock a full property report for exact soil LEP %, water table depth, and utility violation dockets.