HUMBOLDT MUNICIPAL WATER DEPT

HUMBOLDT, IA · ~4,792 people served

Check your exact address → HUMBOLDT overview

100

Excellent

PurityRadar safety score

PWSID

IA4641064

State

Iowa

City

HUMBOLDT

Population served

4,792

Primary source

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

Lithium

14,000 ppt

limit —

No federal limit

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

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

Max contaminant level (MCL) · Total coliform health-based began Aug 2009 Resolved

Recent enforcement actions

State action · SOX Mar 2010
State action · SIF Sep 2009
State action · SIE Aug 2009
State action · SFJ Aug 2009
State action · SIA Aug 2009
State action · SO7 Mar 1982
State action · SO7 Feb 1982
State action · SO7 Feb 1982

This profile is built from EPA public records for system IA4641064 — 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.