York County, SC
The federal environmental record for York County (population 298,320): what is on file, where it is, and what remains open. Sources and retrieval dates are on the methodology page.
2
Superfund NPL sites
9
federal cleanup sites
6
PFAS-detecting water systems
29
TRI facilities
116
open tank releases
Superfund NPL sites
| Site | City | Status | Listed |
|---|---|---|---|
| Leonard Chemical Co., Inc. | Rock Hill | on the NPL | 09/21/1984 |
| Rock Hill Chemical Co. | Rock Hill | on the NPL | 02/21/1990 |
Drinking water: PFAS testing
Public water systems serving York 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 |
|---|---|---|
| YORK CITY OF (4610001) SC4610001 | PFPeA: 3.9 ng/L PFHxA: 3.4 ng/L | detected |
| ROCK HILL CITY OF (SC4610002) SC4610002 | PFPeA: 5.9 ng/L PFHxA: 4.4 ng/L | detected |
| FORT MILL TOWN OF (SC4610003) SC4610003 | PFPeA: 4.6 ng/L PFHxA: 4.4 ng/L | detected |
| TEGA CAY CITY OF (SC4610008) SC4610008 | PFPeA: 4.1 ng/L PFHxA: 3.8 ng/L | detected |
| YORK COUNTY EAST WD (4620002) SC4620002 | PFPeA: 4.8 ng/L PFHxA: 4.4 ng/L | detected |
| York County West WD SC4620003 | PFPeA: 4.9 ng/L PFHxA: 4.2 ng/L | detected |
On a system with detections? Testing and treatment options
Facilities reporting toxic releases (2024)
29 facilities in York filed TRI reports for 2024, totalling 2.2M lb released. The 25 largest by volume:
| Facility | City | Top chemicals | Total released |
|---|---|---|---|
| NEW-INDY CATAWBA LLC | CATAWBA | Methanol, Zinc compounds | 1.6M lb |
| HONEYWELL SAFETY PRODUCTS | CLOVER | Xylene (mixed isomers), Ethylbenzene | 365k lb |
| NATION FORD CHEMICAL CO | FORT MILL | Nitric acid, Aniline | 71k lb |
| CYTEC ENGINEERED MATERIALS INC. | ROCK HILL | Hydrogen cyanide | 70k lb |
| ATOTECH USA LLC | ROCK HILL | Nitric acid, Chromium compounds (except for chromite ore mined in the Transvaal Region) | 53k lb |
| PBI PERFORMANCE PRODUCTS INC | ROCK HILL | Phenol | 25k lb |
| SEM PRODUCTS INC | ROCK HILL | Toluene, Xylene (mixed isomers) | 15k lb |
| HUNTSMAN | ROCK HILL | Toluene, n-Butyl alcohol | 3k lb |
| INCHEM CORP | ROCK HILL | Xylene (mixed isomers), Methyl isobutyl ketone | 2k lb |
| POSSEHL CONNECTOR SERVICES SC INC. | ROCK HILL | Nickel And Nickel Compounds, Copper | 1k lb |
| HARRELL INDUSTRIES INC | ROCK HILL | Formic acid, Copper compounds | 421 lb |
| SCHAEFFLER GROUP USA INC - PLANTS III/VI | FORT MILL | Methanol | 346 lb |
| STEELFAB INC. | YORK | Manganese, Propylene | 155 lb |
| ULTRA ADDITIVES LLC | CLOVER | Methyl methacrylate | 48 lb |
| KOPPERS PERFORMANCE CHEMICALS INC | ROCK HILL | Copper compounds | 25 lb |
| PDM US LLC | ROCK HILL | Copper | 0 lb |
| SUNBELT CORP | ROCK HILL | - | 0 lb |
| FOMAS INC | YORK | - | 0 lb |
| SWS CONCRETE-CLOVER PLANT | CLOVER | Lead And Lead Compounds | 0 lb |
| CATOE & NALLEY INDUSTRIAL SOLUTIONS INC. | ROCK HILL | Chromium, Manganese | 0 lb |
| THOMAS CONCRETE | FORT MILL | Lead | 0 lb |
| ACE ELASTOMER | ROCK HILL | - | 0 lb |
| DOMAN TUCKER LUMBER OF ROCK HILL LLC | ROCK HILL | - | 0 lb |
| MASONITE CORP FORT MILL | FORT MILL | - | 0 lb |
| THOMAS CONCRETE - ROCK HILL | ROCK HILL | Lead | 0 lb |
Underground fuel tanks
EPA's UST Finder records 524 tank facilities in York: 478 tanks in service and 1,178 closed. 379 fuel releases are on record, of which 116 remain open. Open releases are cleanups that have not reached "no further action".
Radon
EPA maps York 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 York, including sites assessed but never listed. Presence here records that EPA had reason to look, not a finding of danger.
- 60 MINUTE CLEANERSROCK HILL
- CAROLINA STEEL DRUM CORPROCKHILL
- GREENS OF ROCK HILL ASBESTOSROCK HILL
- H2S IN NORTH AND SOUTH CAROLINACATAWBA
- HINSON CHEMICALLAKE WYLIE
- HOLLAND RD SITEROCKHILL
- LEONARD CHEMICAL CO., INC.ROCK HILL
- PETROCHEMROCK HILL
- ROCK HILL CHEMICAL CO.ROCK HILL