Home/ Directory/ SD/ PIERRE

Water system · PWSID SD4600242

PIERRE

PIERRE, SD · ~14,091 people served

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

PWSID

SD4600242

State

South Dakota

City

PIERRE

Population served

14,091

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

Lithium

25,200 ppt

limit —

No federal limit

Violations & enforcement

2

Violations on record

0

Unaddressed

0

Health-based

4

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Aug 2009. Official EPA record →

Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2008 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2008 Resolved

Recent enforcement actions

  • State action · SOX Aug 2009
  • State action · SOX Aug 2009
  • State action · SIE Oct 2008
  • State action · SIE Oct 2008

This profile is built from EPA public records for system SD4600242 — 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.