Clark County, OH
The federal environmental record for Clark County (population 134,610): what is on file, where it is, and what remains open. Sources and retrieval dates are on the methodology page.
2
Superfund NPL sites
15
federal cleanup sites
1
PFAS-detecting water systems
13
TRI facilities
31
open tank releases
Superfund NPL sites
| Site | City | Status | Listed |
|---|---|---|---|
| Donnelsville Contaminated Aquifer | Donnelsville | on the NPL | 09/13/2018 |
| New Carlisle Landfill | New Carlisle | on the NPL | 04/09/2009 |
Drinking water: PFAS testing
Public water systems serving Clark 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 |
|---|---|---|
| NEW CARLISLE CITY PWS OH1203312 | PFBS: 5.5 ng/L | detected |
On a system with detections? Testing and treatment options
Facilities reporting toxic releases (2024)
13 facilities in Clark filed TRI reports for 2024, totalling 40k lb released.
| Facility | City | Top chemicals | Total released |
|---|---|---|---|
| SILFEX INC | SPRINGFIELD | Nitrate compounds (water dissociable; reportable only when in aqueous solution), Nitric acid | 12k lb |
| DFA DAIRY BRANDS FLUID LLC DBA REITER DAIRY | SPRINGFIELD | Nitrate compounds (water dissociable; reportable only when in aqueous solution), Nitric acid | 10k lb |
| INTERNATIONAL MOTORS LLC. | SPRINGFIELD | Certain glycol ethers, Diisononyl Phthalates (DINP) | 9k lb |
| OS KELLY CO | SPRINGFIELD | Naphthalene, Phenol | 4k lb |
| PARKER TRUTEC | SPRINGFIELD | Cyanide compounds, Ammonia | 4k lb |
| THE CHAMPION CO | SPRINGFIELD | Methanol, Formaldehyde | 335 lb |
| TEIKURO CORP | SPRINGFIELD | Lead | 221 lb |
| CASCADE CORP | SPRINGFIELD | Manganese | 10 lb |
| OLDCASTLE LAWN & GARDEN | SPRINGFIELD | - | 0 lb |
| DOLE FRESH VEGETABLES | SPRINGFIELD | - | 0 lb |
| ARMOLOY OF OHIO INC. | SPRINGFIELD | Lead | 0 lb |
| PFI PRECISION NEW CARLISLE OHIO | NEW CARLISLE | - | 0 lb |
| YAMADA NA INC | SOUTH CHARLESTON | - | 0 lb |
Underground fuel tanks
EPA's UST Finder records 308 tank facilities in Clark: 241 tanks in service and 694 closed. 437 fuel releases are on record, of which 31 remain open. Open releases are cleanups that have not reached "no further action".
Radon
EPA maps Clark 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 Clark, including sites assessed but never listed. Presence here records that EPA had reason to look, not a finding of danger.
- CAREY ELECTRONICS RADIUM SITESPRINGFIELD
- CASSILLY STREET MERCURY SITESPRINGFIELD
- DONNELSVILLE CONTAMINATED AQUIFERDONNELSVILLE
- ENON MERCURY SPILLENON
- GINGER AVENUE MERCURY SPILLENON
- NEW CARLISLE LANDFILLNEW CARLISLE
- NEW CARLISLE TRAILERSNEW CARLISLE
- OSTERLEN MERCURY SPILLSPRINGFIELD
- SOUTH PARK RESIDENCE MERCURY SPILLMEDWAY
- SPRINGFIELD ARMATURE WORKSSPRINGFIELD
- SPRINGFIELD MERCURY SITESPRINGFIELD
- TREMONT CITY WASTE TRANSFER FACILITYGERMAN TOWNSHIP
- TREMONT CITY WASTE TRANSFER FACILITYGERMAN TOWNSHIP
- TREMONT CITY WASTE TRANSFER FACILITYGERMAN TOWNSHIP
- WILE MOBILE HOME PARKMEDWAY