Seneca County, Ohio — Flood Zone, Water Quality, Soil Foundation, Radon & EPA Hazards
In Seneca County, Ohio, public U.S. EPA records track 335 regulated facilities (#38 of 141 in Ohio), including 12 (3.6%) High-Risk sites and $264,200 in federal penalties. Countywide due diligence also covers 59 Safe Drinking Water (SDWIS) facilities, 49 Clean Water NPDES permits, 2 FEMA Federal Disaster Declarations (2 flood/storm), USDA Soil Foundation Shrink-Swell (MODERATE signal), and EPA Zone 1 — High Potential (> 4.0 pCi/L).
Seneca County, OH 6-in-1 Flood, Soil Foundation, Tap Water & Radon Signals
🔒 Parcel-Level Soil LEP %, Water Table Depth & Flood Zone Require Street Address Scan📊 Seneca County, OH Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 01, 2026)Municipalities in Seneca County
Top EPA Regulated Facilities in Seneca County, OH
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 High-Risk EPA Enforcement Record #1 | 🔒 Exact Street & Parcel Redacted • FOSTORIA, OH (ZIP 44830 Sector) | HIGH (66/100) | Violation Identified (12 qtrs NC) | 🔒 Federal Penalty on File • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #2 | 🔒 Exact Street & Parcel Redacted • BLOOMVILLE, OH (ZIP 44818 Sector) | HIGH (66/100) | Significant Violation (12 qtrs NC) | 🔒 12 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #3 | 🔒 Exact Street & Parcel Redacted • FOSTORIA, OH (ZIP 44830 Sector) | HIGH (65/100) | Significant Violation (11 qtrs NC) | 🔒 11 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #4 | 🔒 Exact Street & Parcel Redacted • TIFFIN, OH (ZIP 44883 Sector) | HIGH (64/100) | Violation Identified (1 qtrs NC) | 🔒 $100,000+ Federal Fine • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #5 | 🔒 Exact Street & Parcel Redacted • OLD FORT, OH (ZIP 44861 Sector) | HIGH (64/100) | Significant Violation (9 qtrs NC) | 🔒 9 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #6 | 🔒 Exact Street & Parcel Redacted • ATTICA, OH (ZIP 44807 Sector) | HIGH (64/100) | Significant Violation (11 qtrs NC) | 🔒 11 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #7 | 🔒 Exact Street & Parcel Redacted • REPUBLIC, OH (ZIP 44867 Sector) | HIGH (64/100) | Significant Violation (4 qtrs NC) | 🔒 4 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #8 | 🔒 Exact Street & Parcel Redacted • FOSTORIA, OH (ZIP 44830 Sector) | MODERATE (54/100) | Violation Identified (4 qtrs NC) | 🔒 4 Qtrs Non-Compliance • Unlock → |
| RUFFING FAMILY CARE CENTER FREE PREVIEW (LOW RISK) | 2320 WEST CO RD 6, TIFFIN, OH 44883 | LOW (19/100) | Inactive (0 qtrs NC) | $0 |
| TIFFIN FOUNDRY & MACHINE FREE PREVIEW (LOW RISK) | 423 W ADAMS ST, TIFFIN, OH 44883 | LOW (19/100) | No Violation Identified (0 qtrs NC) | $0 |
| AMERICAN STANDARD INCORPORATED FREE PREVIEW (LOW RISK) | 324 4TH AVENUE, TIFFIN, OH 44883 | LOW (19/100) | No Violation Identified (0 qtrs NC) | $0 |
| CHEMBOND ADHESIVES INC FREE PREVIEW (LOW RISK) | 108 ADAMS ST, TIFFIN, OH 44883 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
Frequently Asked Questions — Seneca County, Ohio Environmental Due Diligence
How many EPA-regulated environmental sites are in Seneca County, Ohio?
Public U.S. EPA records track 335 regulated facilities in Seneca County, Ohio (ranking #38 of 141 jurisdictions in OH). Of those, 12 (3.6%) are classified in the High-Risk tier due to significant enforcement or chemical release history, and 34 (10.1%) have active non-compliance quarters.
Which ZIP codes and cities in Seneca County have the highest regulated facility density?
Within Seneca County, the highest concentrations of EPA-tracked facilities are located in ZIP 44883 (Tiffin, 137 sites), ZIP 44830 (Fostoria, 106 sites), ZIP 44807 (Attica, 17 sites), spanning municipal corridors including Tiffin (139 sites), Fostoria (105 sites), Attica (16 sites).
How many hazardous waste (RCRA) and toxic release (TRI) handlers operate in Seneca County?
Across Seneca County, 203 facilities (60.6% 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 Seneca County, OH?
Geologic indoor air screening places Seneca 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 Seneca County, OH?
Federal records track 59 Safe Drinking Water (SDWIS) facilities, 49 Clean Water Act NPDES permits, and 49 impaired water dischargers in Seneca County, alongside 2 historical FEMA federal disaster declarations (2 flood/storm events).
Does Seneca County, OH have expansive clay soil or foundation risk?
USDA regional soil engineering screening for Seneca 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.