Brown County, South Dakota — Property Hazard, Flood Zone, Soil, Water & EPA Guide
What Are the Flood, Soil Foundation & EPA Risks in Brown County, SD?
In Brown County, South Dakota, public U.S. EPA records track 37 regulated facilities (#41 of 109 in South Dakota), including 1 (2.7%) High-Risk sites and $146,463 in federal penalties. Countywide due diligence also covers 0 Safe Drinking Water (SDWIS) facilities, 34 Clean Water NPDES permits, 1 FEMA Federal Disaster Declarations (1 flood/storm), USDA Soil Foundation Shrink-Swell (MODERATE signal), and EPA Zone 1 — High Potential (> 4.0 pCi/L).
Brown County, SD 6-in-1 Flood, Soil Foundation, Tap Water & Radon Signals
🔒 Parcel-Level Soil LEP %, Water Table Depth & Flood Zone Require Street Address Scan📊 Brown County, SD Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 05, 2026)Municipalities in Brown County
ZIP Codes in Brown County
Top EPA Regulated Facilities in Brown County, 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 |
|---|---|---|---|---|
| 🔒 Locked Regulated EPA Enforcement Record #1 | 🔒 Exact Street & Parcel Redacted • ABERDEEN, SD (ZIP 57401 Sector) | MODERATE (46/100) | No Violation Identified (0 qtrs NC) | 🔒 $100,000+ Federal Fine • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #2 | 🔒 Exact Street & Parcel Redacted • ABERDEEN, SD (ZIP 57401 Sector) | MODERATE (30/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| GRAIN STORAGE FACILITY ADDITION FREE PREVIEW (LOW RISK) | 38469 133RD ST, ABERDEEN, SD 57401 | LOW (18/100) | No Violation Identified (0 qtrs NC) | $0 |
| ELM LAKE DAM SPILLWAY REPLACEMENT FREE PREVIEW (LOW RISK) | 106TH ST & 375TH AVE, FREDERICK, SD 57441 | LOW (18/100) | No Violation Identified (0 qtrs NC) | $0 |
| COLUMBIA PARK & BALLFIELD FREE PREVIEW (LOW RISK) | BROADWAY ST (FROM LAVIN AVE TO ISMOND AVE), COLUMBIA, SD 57433 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
| NEW A-TAP SUBSTATION FREE PREVIEW (LOW RISK) | 1/2 MILE N OF 133RD ST & 384TH AVE, ABERDEEN, SD 57401 | LOW (16/100) | No Violation Identified (0 qtrs NC) | $0 |
| 🔒 Locked Regulated EPA Enforcement Record #3 | 🔒 Exact Street & Parcel Redacted • ABERDEEN, SD (ZIP 57401 Sector) | LOW (16/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #4 | 🔒 Exact Street & Parcel Redacted • ABERDEEN, SD (ZIP 57401 Sector) | LOW (16/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #5 | 🔒 Exact Street & Parcel Redacted • ABERDEEN, SD (ZIP 57401 Sector) | LOW (13/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #6 | 🔒 Exact Street & Parcel Redacted • GROTON, SD (ZIP 57445 Sector) | LOW (13/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #7 | 🔒 Exact Street & Parcel Redacted • WESTPORT, SD (ZIP 57481 Sector) | LOW (13/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #8 | 🔒 Exact Street & Parcel Redacted • ABERDEEN, SD (ZIP 57401 Sector) | LOW (13/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
Frequently Asked Questions — Brown County, South Dakota Environmental Due Diligence
How many EPA-regulated environmental sites are in Brown County County, South Dakota?
Public U.S. EPA records track 37 regulated facilities in Brown County County, South Dakota (ranking #41 of 109 jurisdictions in SD). Of those, 1 (2.7%) are classified in the High-Risk tier due to significant enforcement or chemical release history, and 0 (0.0%) have active non-compliance quarters.
Which ZIP codes and cities in Brown County County have the highest regulated facility density?
Within Brown County County, the highest concentrations of EPA-tracked facilities are located in ZIP 57441 (Frederick, 6 sites), ZIP 57433 (Columbia, 4 sites), ZIP 57449 (Houghton, 1 sites), spanning municipal corridors including Frederick (6 sites), Columbia (4 sites), Westport (2 sites).
How many hazardous waste (RCRA) and toxic release (TRI) handlers operate in Brown County County?
Across Brown County County, 0 facilities (0.0% of regulated sites) are registered Resource Conservation and Recovery Act (RCRA) hazardous waste generators or handlers, and 0 industrial sites report toxic chemical releases to the EPA Toxics Release Inventory (TRI).
What is the EPA Radon Zone classification for Brown County County, SD?
Geologic indoor air screening places Brown County County in EPA Zone 1 — High Potential (> 4.0 pCi/L). Counties in EPA Radon Zone 1 have a predicted average indoor radon screening level greater than 4.0 pCi/L (the EPA action threshold). Short-term or continuous indoor radon testing is strongly recommended prior to closing.
How many drinking water systems (SDWIS), impaired water bodies, and FEMA flood disasters are recorded in Brown County County, SD?
Federal records track 0 Safe Drinking Water (SDWIS) facilities, 34 Clean Water Act NPDES permits, and 7 impaired water dischargers in Brown County County, alongside 1 historical FEMA federal disaster declarations (1 flood/storm events).
Does Brown County, SD have expansive clay soil or foundation risk?
USDA regional soil engineering screening for Brown County indicates a MODERATE shrink-swell risk signal and steel pipe corrosivity rated High. Run a street address scan to unlock the exact parcel soil series, LEP %, and water table depth.