Darke County, OH
The federal environmental record for Darke County (population 51,415): what is on file, where it is, and what remains open. Sources and retrieval dates are on the methodology page.
1
Superfund NPL sites
4
federal cleanup sites
1
PFAS-detecting water systems
6
TRI facilities
13
open tank releases
Superfund NPL sites
| Site | City | Status | Listed |
|---|---|---|---|
| Arcanum Iron & Metal | Darke County | deleted | 09/08/1983 |
Drinking water: PFAS testing
Public water systems serving Darke 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 |
|---|---|---|
| GREENVILLE CITY PWS OH1900714 | PFOS: 6.3 ng/L PFHxS: 5.9 ng/L | above final limit |
On a system with detections? Testing and treatment options
Facilities reporting toxic releases (2024)
6 facilities in Darke filed TRI reports for 2024, totalling 64k lb released.
| Facility | City | Top chemicals | Total released |
|---|---|---|---|
| BASF CORP | GREENVILLE | Formic acid, Xylene (mixed isomers) | 39k lb |
| THE ANDERSONS MARATHON HOLDINGS LLC - GREENVILLE FACILITY | GREENVILLE | Acetaldehyde, n-Hexane | 25k lb |
| SPARTECH LLC. | GREENVILLE | Antimony compounds, Tetrabromobisphenol A | 124 lb |
| MIDMARK CORP | VERSAILLES | Manganese, Nickel | 68 lb |
| PRODUCTION PAINT FINISHERS INC. | BRADFORD | Nickel | 4 lb |
| FRAM | GREENVILLE | - | 0 lb |
Underground fuel tanks
EPA's UST Finder records 131 tank facilities in Darke: 108 tanks in service and 279 closed. 175 fuel releases are on record, of which 13 remain open. Open releases are cleanups that have not reached "no further action".
Radon
EPA maps Darke 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 Darke, including sites assessed but never listed. Presence here records that EPA had reason to look, not a finding of danger.
- ARCANUM IRON & METALDARKE COUNTY
- BEASECKER'S DRY CLEANERSGREENVILLE
- GREENVILLE VOC PLUMEGREENVILLE
- MIDWEST UNITED INDUSTRIES/HOBART CORP.GREENVILLE