THOMPSON WATER WORKS

THOMPSON, IA · ~499 people served

Check your exact address → THOMPSON overview

100

Excellent

PurityRadar safety score

PWSID

IA9585017

State

Iowa

City

THOMPSON

Population served

499

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

No PFAS detections are on record for this system from EPA’s UCMR5 monitoring (2023–25). Absence of a detection isn’t a guarantee — not every system was sampled, and this dataset doesn’t cover other contaminants.

Violations & enforcement

Violations on record

Unaddressed

Health-based

105

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement May 2005. Official EPA record →

Max contaminant level (MCL) · Total coliform health-based began Sep 2004 Resolved

Monitoring & reporting · EPA contaminant 2976 began Apr 2001 Resolved

Monitoring & reporting · Arsenic began Jul 2000 Resolved

Monitoring & reporting · Lead & Copper Rule began Apr 1989 Resolved

Monitoring & reporting · Fluoride began Jul 1986 Resolved

Monitoring & reporting · Arsenic began Jul 1986 Resolved

Monitoring & reporting · Nitrate began Jul 1986 Resolved

Monitoring & reporting · Antimony began Jul 1986 Resolved

Monitoring & reporting · Selenium began Jul 1986 Resolved

Monitoring & reporting · Barium began Jul 1986 Resolved

Monitoring & reporting · Cadmium began Jul 1986 Resolved

Monitoring & reporting · Chromium (total) began Jul 1986 Resolved

Recent enforcement actions

State action · SIF May 2005
State action · SOX Mar 2005
State action · SIE Sep 2004
State action · SFJ Sep 2004
State action · SIA Sep 2004
State action · SOX Oct 2001
State action · SOX Oct 2001
State action · SOX Oct 2001

This profile is built from EPA public records for system IA9585017 — 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.