PWSID
SC3250012
State
South Carolina
City
COLUMBIA
Population served
6,637
Primary source
SWP
Score history
▼ 22 points — the score moved from 100 to 78 on Jun 18, 2026, as newly published EPA data was incorporated.
2 score updates logged since tracking began Jun 18, 2026. Each future EPA re-score adds a point.
PFAS & contaminant readings
Latest detections from EPA’s UCMR5 monitoring (through Mar 2025). Levels in parts per trillion (ppt).
PFOS
Perfluorooctanesulfonic acid
5.5 ppt
limit 4 ppt
GenX (HFPO-DA)
GenX (HFPO-DA)
7.8 ppt
limit 10 ppt
PFPeA
3.6 ppt
limit —
PFHxA
3.2 ppt
limit —
Violations & enforcement
2
Violations on record
0
Unaddressed
1
Health-based
13
Enforcement actions
From EPA ECHO (SDWIS), most recent enforcement Mar 2017. Official EPA record →
Recent enforcement actions
- State action · SOX Mar 2017
- State action · SFO Sep 2016
- State action · SFM Sep 2016
- State action · SFN Aug 2016
- State action · SIF Aug 2016
- State action · SFJ Aug 2016
- State action · SIE Jul 2016
- State action · SIA Jul 2016
This profile is built from EPA public records for system SC3250012 — SDWIS violations and UCMR5 PFAS sampling. The score is system-level and can’t account for your home’s plumbing (older pipes can add lead at the tap). For health decisions, check your exact address, read the utility’s Consumer Confidence Report, and confirm with your provider.