Forever Chemicals
EPA federal monitoring data, military contamination sources, and industrial PFAS facilities for South Carolina. All data loaded directly from federal bulk datasets.
48
Water systems tested
UCMR 5 (2021–2024)
24
Systems with any PFAS detected
50% detection rate
0
Systems exceeding 2024 MCL
Above 4 ppt PFOA/PFOS
6
Distinct PFAS compounds detected
Of 29 monitored under UCMR 5
0
TRI-reporting PFAS facilities
EPA Toxics Release Inventory 2024
2
DoD PFAS installations
Military PFAS contamination sites
EPA's 5th Unregulated Contaminant Monitoring Rule required public water systems serving more than 3,300 people to test for 29 PFAS compounds between 2021 and 2024. The data above reflects results for South Carolina water systems in that dataset.
Important limitations: systems serving fewer than 3,300 people were not required to test under UCMR 5. Smaller rural systems and private wells are not included. Detection in the monitoring data does not mean the current tap water exceeds the MCL — some systems have since added treatment.
Military installations in South Carolinathat have used aqueous film-forming foam (AFFF) for fire training appear in the Department of Defense's annual PFAS installation status report. AFFF contains PFAS compounds that can migrate through soil and groundwater, reaching wells and water intakes miles from the source.
The DoD count above reflects installations in the annual report, not all possible sources. If you're evaluating a property near any military base in South Carolina, checking the specific installation's status is part of due diligence.
State-level data shows the pattern. An address report shows the matched water system, PFAS detections for that utility, and nearby military and industrial sources.
Data sources: EPA UCMR 5 bulk data · EPA TRI 2024 · DoD PFAS installation report