TMT, INC.

PIERRE, SD · ~250 people served

Check your exact address → PIERRE overview

100

Excellent

PurityRadar safety score

PWSID

SD4602154

State

South Dakota

City

PIERRE

Population served

250

Primary source

SWP

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 Oct 2023). Levels in parts per trillion (ppt).

Lithium

69,800 ppt

limit —

No federal limit

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Aug 2001. Official EPA record →

Other · EPA contaminant 7000 began Jul 2001 Resolved

Max contaminant level (MCL) · Total coliform health-based began Apr 1997 Resolved

Max contaminant level (MCL) · Total coliform health-based began Nov 1996 Resolved

Monitoring & reporting · Lead & Copper Rule began Jul 1996 Resolved

Recent enforcement actions

State action · SO6 Aug 2001
State action · SOX Jul 2001
State action · SOX Nov 1997
State action · SOX Nov 1997
State action · SOX Nov 1997
State action · SOX Aug 1997
State action · SO6 Apr 1997
State action · SIE Apr 1997

This profile is built from EPA public records for system SD4602154 — 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.