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Water system · PWSID SD4600294

SIOUX FALLS

SIOUX FALLS, SD · ~216,462 people served

Check your exact address → SIOUX FALLS overview
100
Excellent
PurityRadar safety score

PWSID

SD4600294

State

South Dakota

City

SIOUX FALLS

Population served

216,462

Primary source

Surface water

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

Lithium

49,100 ppt

limit —

No federal limit

Violations & enforcement

1

Violations on record

0

Unaddressed

1

Health-based

2

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jun 2010. Official EPA record →

Treatment technique · EPA contaminant 0400 health-based began Dec 2009 Resolved

Recent enforcement actions

  • State action · SOX Jun 2010
  • State action · SIA Mar 2010

This profile is built from EPA public records for system SD4600294 — 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.