Sinai, South Dakota — Property Hazard, Flood Zone, Soil, Water & Market Guide
What Are the Major Property, Flood, Soil & Environmental Risks in Sinai, SD?
Public U.S. EPA records track 2 regulated facilities in Sinai, South Dakota (Brookings County), including 0 High-Risk sites (0.0%) and 0 active violators. In addition to industrial waste, Sinai properties are screened for Tap Water & Watershed Permits (2 systems), USDA Soil Foundation Shrink-Swell (MODERATE signal), 2 County FEMA Disaster Declarations, and EPA Zone 1 — High Potential (> 4.0 pCi/L).
Sinai, SD 6-in-1 Flood, Soil Foundation, Tap Water & Radon Signals
🔒 Parcel-Level Soil LEP %, Water Table Depth & Flood Zone Require Street Address Scan📊 Sinai, SD Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 05, 2026)ZIP Codes in Sinai, SD
Highest-Scored EPA Regulated Facilities in Sinai, 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 Tier & Score | Compliance Status | Enforcement / Unlock |
|---|---|---|---|---|
| SINAI, TOWN OF FREE PREVIEW (LOW RISK) | PO BOX 86, SINAI, SD 57061 | LOW (13/100) | No Violation Identified (0 qtrs NC) | $0 |
| SINAI - CITY OF FREE PREVIEW (LOW RISK) | SW1/4,SEC.14,T109N,R52W, SINAI, SD 57061 | LOW (13/100) | No Violation Identified (0 qtrs NC) | $0 |
Frequently Asked Questions — Sinai, South Dakota Environmental Risk & Radon
How many EPA-regulated facilities are in Sinai, SD?
U.S. EPA records track 2 regulated facilities in Sinai, South Dakota, including 0 high-risk sites (0.0%), 0 active violators (0.0%), and 0 RCRA hazardous waste handlers (0.0%).
Which ZIP codes in Sinai, SD have the most EPA-tracked sites?
Within Sinai, regulated facilities are primarily concentrated across ZIP 57061 (2 sites).
How can I check a specific house or commercial property in Sinai, SD?
Enter the exact street address in Sinai into the FullPropertyReport radius scanner to screen all EPA ECHO, FRS, RCRA, TRI, USDA soil foundation shrink-swell, drinking water (SDWIS), FEMA flood zone, and county radon records within 0.5 to 3.0 miles.
Is tap water safe in Sinai, SD and how many EPA water permits exist?
In Sinai, SD, federal registries track 0 Safe Drinking Water (SDWIS) facilities, 2 Clean Water Act NPDES permits, and 0 impaired water body dischargers.
What is the soil foundation risk and FEMA flood disaster history in Sinai, SD?
USDA regional soil screening for Sinai indicates a MODERATE shrink-swell foundation signal, and Brookings County has recorded 2 federal FEMA disaster declarations (1 flood/severe storm declarations). Run an address scan to unlock exact parcel soil LEP %, water table depth, and flood zone.