Riley County, Kansas — Property Hazard, Flood Zone, Soil, Water & EPA Guide
What Are the Flood, Soil Foundation & EPA Risks in Riley County, KS?
In Riley County, Kansas, public U.S. EPA records track 503 regulated facilities (#13 of 193 in Kansas), including 3 (0.6%) High-Risk sites and $5,373,074 in federal penalties. Countywide due diligence also covers 18 Safe Drinking Water (SDWIS) facilities, 418 Clean Water NPDES permits, 2 FEMA Federal Disaster Declarations (2 flood/storm), USDA Soil Foundation Shrink-Swell (HIGH signal), and EPA Zone 1 — High Potential (> 4.0 pCi/L).
Riley County, KS 6-in-1 Flood, Soil Foundation, Tap Water & Radon Signals
🔒 Parcel-Level Soil LEP %, Water Table Depth & Flood Zone Require Street Address Scan📊 Riley County, KS Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 03, 2026)Municipalities in Riley County
Top EPA Regulated Facilities in Riley County, KS
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 • MANHATTAN, KS (ZIP 66502 Sector) | MODERATE (48/100) | Violation Identified (11 qtrs NC) | 🔒 11 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #2 | 🔒 Exact Street & Parcel Redacted • MANHATTAN, KS (ZIP 66502 Sector) | MODERATE (47/100) | No Violation Identified (0 qtrs NC) | 🔒 $10,000+ Federal Fine • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #3 | 🔒 Exact Street & Parcel Redacted • MANHATTAN, KS (ZIP 66503 Sector) | MODERATE (47/100) | Violation Identified (3 qtrs NC) | 🔒 Federal Penalty on File • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #4 | 🔒 Exact Street & Parcel Redacted • RILEY, KS (ZIP 66531 Sector) | MODERATE (37/100) | Violation Identified (5 qtrs NC) | 🔒 5 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #5 | 🔒 Exact Street & Parcel Redacted • JUNCTION CITY, KS (ZIP 66441 Sector) | MODERATE (36/100) | Violation Identified (11 qtrs NC) | 🔒 11 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #6 | 🔒 Exact Street & Parcel Redacted • MANHATTAN, KS (ZIP 66502 Sector) | MODERATE (35/100) | No Violation Identified (0 qtrs NC) | 🔒 $100,000+ Federal Fine • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #7 | 🔒 Exact Street & Parcel Redacted • MANHATTAN, KS (ZIP 66502 Sector) | MODERATE (33/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #8 | 🔒 Exact Street & Parcel Redacted • MANHATTAN, KS (ZIP 66502 Sector) | MODERATE (30/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| ELKINS MOTOR CO FREE PREVIEW (LOW RISK) | 2312 STAGG HILL RD, MANHATTAN, KS 66502 | LOW (23/100) | No Violation Identified (0 qtrs NC) | $0 |
| USDA ARS KS CGAHR AG RESEARCH SERVICE FREE PREVIEW (LOW RISK) | 1515 COLLEGE, MANHATTAN, KS 66502 | LOW (19/100) | No Violation Identified (0 qtrs NC) | $0 |
| C & M AUTO CARE FREE PREVIEW (LOW RISK) | 309 N 3RD, MANHATTAN, KS 66502 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
| STEEL PIPE & SUPPLY FREE PREVIEW (LOW RISK) | 205 OSAGE, MANHATTAN, KS 66502 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
Frequently Asked Questions — Riley County, Kansas Environmental Due Diligence
How many EPA-regulated environmental sites are in Riley County, Kansas?
Public U.S. EPA records track 503 regulated facilities in Riley County, Kansas (ranking #13 of 193 jurisdictions in KS). Of those, 3 (0.6%) are classified in the High-Risk tier due to significant enforcement or chemical release history, and 6 (1.2%) have active non-compliance quarters.
Which ZIP codes and cities in Riley County have the highest regulated facility density?
Within Riley County, the highest concentrations of EPA-tracked facilities are located in ZIP 66502 (Manhattan, 449 sites), ZIP 66503 (Manhattan, 122 sites), ZIP 66506 (Manhattan, 23 sites), spanning municipal corridors including Manhattan (609 sites), Riley (11 sites), Randolph (10 sites).
How many hazardous waste (RCRA) and toxic release (TRI) handlers operate in Riley County?
Across Riley County, 195 facilities (38.8% 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 Riley County, KS?
Geologic indoor air screening places Riley 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 Riley County, KS?
Federal records track 18 Safe Drinking Water (SDWIS) facilities, 418 Clean Water Act NPDES permits, and 121 impaired water dischargers in Riley County, alongside 2 historical FEMA federal disaster declarations (2 flood/storm events).
Does Riley County, KS have expansive clay soil or foundation risk?
USDA regional soil engineering screening for Riley County indicates a HIGH 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.