ZIP 57735 (Edgemont, SD) — Flood Zone, Water Quality, Soil Foundation, Radon & EPA Hazards
ZIP code 57735 in Edgemont, South Dakota (Fall River County) has 16 EPA-tracked facilities, including 1 High-Risk sites (6.2%), 1 active violators, and $0 in federal penalties. Beyond industrial pollution, properties in ZIP 57735 are screened across 1 historical Fall River County FEMA disasters, USDA Soil Foundation Shrink-Swell (HIGH signal), Tap Water & Watershed Permits (8), and EPA Zone 1 — High Potential (> 4.0 pCi/L).
ZIP 57735 (Edgemont, SD) 6-in-1 Flood, Soil Foundation, Tap Water & Radon Signals
🔒 Parcel-Level Soil LEP %, Water Table Depth & Flood Zone Require Street Address Scan📊 ZIP 57735 (Edgemont, SD) Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 01, 2026)ZIP 57735 Sector Screening Map (High-Risk Pin Coordinates Locked)
Exact street pins for 1 High-Risk and 1 Active Violation sites are redacted on public directory maps.
Regulated EPA Facilities in ZIP 57735 (Edgemont, SD)
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 • EDGEMONT, SD (ZIP 57735 Sector) | HIGH (64/100) | Significant Violation (9 qtrs NC) | 🔒 9 Qtrs Non-Compliance • Unlock → |
| SPACE ORDNANCE SYSTEMS FREE PREVIEW (LOW RISK) | BLACK HILLS ARMY DEPOT, EDGEMONT, SD 57735 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
| US ACOE: BLACK HILLS ARMY DEPOT FREE PREVIEW (LOW RISK) | T9SR1E SEC 34-36 31-35, EDGEMONT, SD 57735 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
| EDGEMONT SCHOOL DISTRICT 23-1 FREE PREVIEW (LOW RISK) | 715 D STREET, EDGEMONT, SD 57735 | LOW (16/100) | No Violation Identified (0 qtrs NC) | $0 |
| RUSHMORE RESERVES LLC FREE PREVIEW (LOW RISK) | 11190 PINE HILLS RD, EDGEMONT, SD 57735 | LOW (16/100) | No Violation Identified (0 qtrs NC) | $0 |
| 🔒 Locked Regulated EPA Enforcement Record #2 | 🔒 Exact Street & Parcel Redacted • EDGEMONT, SD (ZIP 57735 Sector) | LOW (16/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #3 | 🔒 Exact Street & Parcel Redacted • EDGEMONT, SD (ZIP 57735 Sector) | LOW (16/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #4 | 🔒 Exact Street & Parcel Redacted • EDGEMONT, SD (ZIP 57735 Sector) | LOW (13/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #5 | 🔒 Exact Street & Parcel Redacted • EDGEMONT, SD (ZIP 57735 Sector) | LOW (12/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #6 | 🔒 Exact Street & Parcel Redacted • EDGEMONT, SD (ZIP 57735 Sector) | LOW (12/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #7 | 🔒 Exact Street & Parcel Redacted • EDGEMONT, SD (ZIP 57735 Sector) | LOW (12/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #8 | 🔒 Exact Street & Parcel Redacted • EDGEMONT, SD (ZIP 57735 Sector) | LOW (12/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
Frequently Asked Questions — ZIP 57735 (Edgemont, SD) EPA Dataset & Radon
DATASET: U.S. EPA ECHO • FRS • RCRAInfo • TRI (November 01, 2026)How many EPA-tracked environmental sites are in ZIP code 57735 (Edgemont, SD)?
ZIP code 57735 (Edgemont, SD) contains 16 EPA-tracked facilities, of which 1 (6.2%) are classified in the High-Risk tier, 1 (6.2%) have active compliance violations, and 6 (37.5%) handle RCRA hazardous waste.
How does ZIP 57735 compare to Fall River County and South Dakota averages?
In ZIP 57735, 6.2% of regulated sites are rated High Risk, compared to 2.1% across Fall River County and 0.7% statewide in South Dakota.
What is the EPA Radon Zone and ASTM Phase I screening radius for ZIP 57735?
Geologic screening places ZIP 57735 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 57735 (Edgemont, SD) in a FEMA flood zone and what is the flood disaster history?
Fall River County has recorded 1 historical FEMA federal disaster declarations (0 flood, hurricane, or severe storm declarations). Run a street address scan in ZIP 57735 to unlock the exact parcel FEMA flood zone (AE / VE / X) and mandatory flood insurance status.
Does ZIP 57735 have expansive clay soil, foundation problems, or drinking water violations?
USDA regional soil screening for ZIP 57735 indicates a HIGH shrink-swell risk signal. Within ZIP 57735, federal registries track 2 SDWIS drinking water facilities, 6 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.