Horry County, SC
The federal environmental record for Horry County (population 397,478): what is on file, where it is, and what remains open. Sources and retrieval dates are on the methodology page.
0
Superfund NPL sites
7
federal cleanup sites
6
PFAS-detecting water systems
13
TRI facilities
121
open tank releases
Drinking water: PFAS testing
Public water systems serving Horry 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 |
|---|---|---|
| MYRTLE BEACH CITY OF (SC2610001) SC2610001 | PFBA: 6.1 ng/L PFOS: 5.3 ng/L PFOA: 5.3 ng/L | above final limit |
| CONWAY CITY OF (SC2610008) SC2610008 | PFOS: 10.3 ng/L PFOA: 9.2 ng/L PFPeA: 8.8 ng/L | above final limit |
| N MYRTLE BEACH CITY OF (SC2610011) SC2610011 | PFOS: 10 ng/L PFOA: 8.4 ng/L PFBA: 7.1 ng/L | above final limit |
| CONWAY RURAL (2620001) SC2620001 | PFOA: 10.9 ng/L PFOS: 10.8 ng/L PFPeA: 10.5 ng/L | above final limit |
| GSW&SA (SC2620004) SC2620004 | PFPeA: 11.8 ng/L PFOS: 11.5 ng/L PFOA: 11.4 ng/L | above final limit |
| OCEAN LAKES LTD (2660048) SC2660048 | PFOA: 5 ng/L PFOS: 4.6 ng/L PFPeA: 3.5 ng/L | above final limit |
On a system with detections? Testing and treatment options
Facilities reporting toxic releases (2024)
13 facilities in Horry filed TRI reports for 2024, totalling 86k lb released.
| Facility | City | Top chemicals | Total released |
|---|---|---|---|
| AALBERTS INTEGRATED PIPING SYSTEMS AMERICAS | CONWAY | 4,4'-Isopropylidenediphenol, Cobalt | 50k lb |
| NEW SOUTH LUMBER & WOOD PRESERVING COS. - CONWAY PLANT | CONWAY | Methanol, Manganese compounds | 36k lb |
| RINKER MYRTLE BEACH PIPE | AYNOR | Lead | 0 lb |
| METGLAS INC | CONWAY | - | 0 lb |
| THOMAS CONCRETE - LITTLE RIVER | LITTLE RIVER | Lead And Lead Compounds | 0 lb |
| CONCRETE SUPPLY CO. LLC - CONWAY | CONWAY | Lead And Lead Compounds | 0 lb |
| S&W CONWAY PLANT | CONWAY | Lead | 0 lb |
| S&W MURRELLS INLET | MURRELLS INLET | Lead | 0 lb |
| CONCRETE SUPPLY CO LLC-NMB | LONGS | Lead And Lead Compounds | 0 lb |
| THOMAS CONCRETE CONWAY WEST | CONWAY | Lead And Lead Compounds | 0 lb |
| CONCRETE SUPPLY CO - SOUTH MYRTLE BEACH | MYRTLE BEACH | Lead And Lead Compounds | 0 lb |
| THOMAS CONCRETE - MYRTLE BEACH | CONWAY | Lead And Lead Compounds | 0 lb |
| S&W LITTLE RIVER PLANT | LITTLE RIVER | Lead | 0 lb |
Underground fuel tanks
EPA's UST Finder records 785 tank facilities in Horry: 623 tanks in service and 1,626 closed. 594 fuel releases are on record, of which 121 remain open. Open releases are cleanups that have not reached "no further action".
Radon
EPA maps Horry as Zone 3, the lowest predicted indoor radon (under 2 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 Horry, including sites assessed but never listed. Presence here records that EPA had reason to look, not a finding of danger.
- CHIQUOLA SPINNERS LLCCONWAY
- HAGUE MARINAMYRTLE BEACH
- NEW SOUTH WOOD PRESERVINGCONWAY
- ODUM BUFKINGREEN SEA
- US AIR FORCE MYRTLE BEACH AIR FORCE BASEMYRTLE BEACH
- USAF AEROSPACE GROUND EQUIPMENTMYRTLE BEACH
- WAYSIDE OIL /PANTRY PLUSAYNOR