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Water system · PWSID SC3210003

CAYCE CITY OF (SC3210003)

WEST COLUMBIA, SC · ~17,460 people served

Check your exact address → WEST COLUMBIA overview

Fair

PurityRadar safety score

PWSID

SC3210003

State

South Carolina

City

WEST COLUMBIA

Population served

17,460

Primary source

Surface water

Score history

▼ 44 points — the score moved from 100 to 56 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 56

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 Sep 2025). Levels in parts per trillion (ppt).

PFOS

Perfluorooctanesulfonic acid

6.3 ppt

limit 4 ppt

Above EPA limit · 1.6×

PFOA

Perfluorooctanoic acid

5.5 ppt

limit 4 ppt

Above EPA limit · 1.4×

GenX (HFPO-DA)

7.4 ppt

limit 10 ppt

Near EPA limit

PFPeA

5 ppt

limit —

No federal limit

PFHxA

4.9 ppt

limit —

No federal limit

PFBS

3.8 ppt

limit —

No federal limit

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jan 2013. Official EPA record →

Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Apr 2012 Resolved

Monitoring & reporting · Total coliform began May 2003 Resolved

Monitoring & reporting · Nitrate began Jul 1993 Resolved

Monitoring & reporting · EPA contaminant 0200 began Jul 1993 Resolved

Monitoring & reporting · Nitrate began Apr 1993 Resolved

Monitoring & reporting · Antimony began Jan 1993 Resolved

Monitoring & reporting · Barium began Jan 1993 Resolved

Monitoring & reporting · Nitrate began Jan 1993 Resolved

Monitoring & reporting · Selenium began Jan 1993 Resolved

Monitoring & reporting · Cadmium began Jan 1993 Resolved

Monitoring & reporting · Chromium (total) began Jan 1993 Resolved

Monitoring & reporting · Lead & Copper Rule began Jul 1992 Resolved

Recent enforcement actions

State action · SOX Jan 2013
State action · SFM Sep 2012
State action · SFO Sep 2012
State action · SFN Aug 2012
State action · SFJ Aug 2012
State action · SIF Jul 2012
State action · SIA Jun 2012
State action · SIE Jun 2012

Area water-quality monitoring

Environmental monitoring (rivers, wells, intakes) recorded in this system’s service area in the EPA/USGS Water Quality Portal since 2018 — source/ambient water, not finished tap water. Context for the watershed, not a reading from your tap.

ContaminantMedian · max · samples

Manganese

3 stations · latest Feb 2026

0.019 · max 0.33 mg/L · 43

Lead

1 station · latest Jan 2024

0.0051 · max 0.0051 mg/L · 1

Source: Water Quality Portal (EPA/USGS/state agencies). Values are as-reported and aren’t health thresholds.

This profile is built from EPA public records for system SC3210003 — 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.