Williamson County, TN
The federal environmental record for Williamson County (population 264,460): what is on file, where it is, and what remains open. Sources and retrieval dates are on the methodology page.
0
Superfund NPL sites
2
federal cleanup sites
2
PFAS-detecting water systems
5
TRI facilities
4
open tank releases
Drinking water: PFAS testing
Public water systems serving Williamson 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 |
|---|---|---|
| NOLENSVILLE-COLLEGE GROVE UD TN0000511 | PFBS: 30.7 ng/L PFHxA: 28.3 ng/L PFPeA: 14.5 ng/L | above final limit |
| FRANKLIN WATER DEPT TN0000246 | PFBA: 6.1 ng/L | detected |
On a system with detections? Testing and treatment options
Facilities reporting toxic releases (2024)
5 facilities in Williamson filed TRI reports for 2024, totalling 71k lb released.
| Facility | City | Top chemicals | Total released |
|---|---|---|---|
| ESSEX SOLUTIONS USA LLC | FRANKLIN | N-Methyl-2-pyrrolidone, Phenol | 41k lb |
| APCOM INC | FRANKLIN | Zinc compounds, Copper | 30k lb |
| GEORGIA MASONRY SUPPLY FRANKLIN | FRANKLIN | Lead And Lead Compounds | 0 lb |
| FOLEY PRODUCTS CO - FRANKLIN | FRANKLIN | Lead | 0 lb |
| SMYRNA READY MIX LLC PLANT 5 | FRANKLIN | - | 0 lb |
Underground fuel tanks
EPA's UST Finder records 250 tank facilities in Williamson: 224 tanks in service and 556 closed. 219 fuel releases are on record, of which 4 remain open. Open releases are cleanups that have not reached "no further action".
Radon
EPA maps Williamson as Zone 1, the highest predicted indoor radon levels (over 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 Williamson, including sites assessed but never listed. Presence here records that EPA had reason to look, not a finding of danger.
- COLLEGE GROVE BATTERY CHIP SITECOLLEGE GROVE
- FAIRVIEW INDUSTRIAL FIREFAIRVIEW