Unicoi County, TN
The federal environmental record for Unicoi County (population 17,756): what is on file, where it is, and what remains open. Sources and retrieval dates are on the methodology page.
0
Superfund NPL sites
3
federal cleanup sites
1
PFAS-detecting water systems
3
TRI facilities
1
open tank releases
Drinking water: PFAS testing
Public water systems serving Unicoi with at least one PFAS detection under UCMR5. The federal limit for PFOA and PFOS is 4 ng/L; EPA proposed in May 2026 to rescind the limits for the other compounds, which are shown for information.
| System | Highest results | Reading |
|---|---|---|
| ERWIN UTILITIES AUTHORITY TN0000231 | PFBS: 7.5 ng/L PFOS: 6.7 ng/L PFOA: 4.1 ng/L | above final limit |
On a system with detections? Testing and treatment options
Facilities reporting toxic releases (2024)
3 facilities in Unicoi filed TRI reports for 2024, totalling 66k lb released.
| Facility | City | Top chemicals | Total released |
|---|---|---|---|
| TN TENNESSEE LLC - ERWIN | ERWIN | Chromium, Manganese | 43k lb |
| NUCLEAR FUEL SERVICES INC | ERWIN | Nitrate compounds (water dissociable; reportable only when in aqueous solution), Nitric acid | 23k lb |
| SPECIALTY TIRES OF AMERICA (TN) LLC | UNICOI | - | 0 lb |
Underground fuel tanks
EPA's UST Finder records 68 tank facilities in Unicoi: 28 tanks in service and 163 closed. 62 fuel releases are on record, of which 1 remain open. Open releases are cleanups that have not reached "no further action".
Radon
EPA maps Unicoi as Zone 2, moderate predicted indoor radon (2 to 4 pCi/L average). Radon and air quality are covered in depth on lung.com.
The record for one specific address
County figures blur what matters: distance. The Address Environmental Report runs these same federal datasets against one address and reports every site, tank, polluter and water result around it, with distances, in about a minute.
Get the report - $39All federal cleanup sites on file
The wider Superfund enterprise inventory (SEMS) for Unicoi, including sites assessed but never listed. Presence here records that EPA had reason to look, not a finding of danger.
- CRYSTAL CLEANERSERWIN
- GENERAL METAL FABRICATORSERWIN
- MORRILL ELECTRICROCKY FORK