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Water system · PWSID SC1220002

CHESTER METROPOLITAN DISTRICT (1220002)

CHESTER, SC · ~15,668 people served

Check your exact address → CHESTER overview
76
Good
PurityRadar safety score

PWSID

SC1220002

State

South Carolina

City

CHESTER

Population served

15,668

Primary source

Surface water

Score history

▼ 24 points — the score moved from 100 to 76 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 76

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 Nov 2024). Levels in parts per trillion (ppt).

PFOS

Perfluorooctanesulfonic acid

4.7 ppt

limit 4 ppt

Above EPA limit · 1.2×

PFOA

Perfluorooctanoic acid

4.6 ppt

limit 4 ppt

Above EPA limit · 1.1×

PFPeA

5 ppt

limit —

No federal limit

PFHxA

4.7 ppt

limit —

No federal limit

Violations & enforcement

16

Violations on record

1

Unaddressed

5

Health-based

28

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Apr 2003. Official EPA record →

Monitoring & reporting · Lead & Copper Rule began Oct 2025 Unaddressed
Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2002 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jul 1994 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Apr 1994 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jan 1994 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Oct 1993 Resolved
Monitoring & reporting · Nitrate began Jul 1993 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jul 1993 Resolved
Monitoring & reporting · Nitrate began Apr 1993 Resolved
Monitoring & reporting · Cadmium began Jan 1993 Resolved
Monitoring & reporting · Nitrate began Jan 1993 Resolved
Monitoring & reporting · Selenium began Jan 1993 Resolved

Recent enforcement actions

  • State action · SOX Apr 2003
  • State action · SIA Oct 2002
  • State action · SIF Sep 2002
  • State action · SIA Aug 2002
  • State action · SOX Aug 2002
  • State action · SOX Jul 2002
  • State action · SIA Jun 2002
  • State action · SOX Jan 1995

This profile is built from EPA public records for system SC1220002 — 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.