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Water system · PWSID SC2110011

JOHNSONVILLE CITY OF (SC2110011)

JOHNSONVILLE, SC · ~5,083 people served

Check your exact address → JOHNSONVILLE overview
100
Excellent
PurityRadar safety score

PWSID

SC2110011

State

South Carolina

City

JOHNSONVILLE

Population served

5,083

Primary source

Groundwater

Score history

No change since tracking began Jun 18, 2026.

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

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

Lithium

12,000 ppt

limit —

No federal limit

Violations & enforcement

5

Violations on record

0

Unaddressed

2

Health-based

15

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jan 2025. Official EPA record →

Monitoring · Lead & Copper Rule began Mar 2024 Resolved
Monitoring & reporting · EPA contaminant 0999 began Jan 2024 Resolved
Max contaminant level (MCL) · Total coliform health-based began Oct 2004 Resolved
Max contaminant level (MCL) · Total coliform health-based began Apr 1996 Resolved
Monitoring & reporting · Total coliform began Apr 1996 Resolved

Recent enforcement actions

  • State action · SIF Jan 2025
  • State action · SIF Jan 2025
  • State action · SOX May 2024
  • State action · SOX May 2024
  • State action · SIA Apr 2024
  • State action · SIE Apr 2024
  • State action · SIE Apr 2024
  • State action · SIA Apr 2024

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

1 station · latest Mar 2026

0.024 · max 0.024 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 SC2110011 — 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.