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Water system · PWSID IA4333089

LITTLE SIOUX WATER DEPARTMENT

LITTLE SIOUX, IA · ~150 people served

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

PWSID

IA4333089

State

Iowa

City

LITTLE SIOUX

Population served

150

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

15

Violations on record

1

Unaddressed

2

Health-based

85

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Aug 2025. Official EPA record →

Other · EPA contaminant 7500 began Feb 2023 Unaddressed
Monitoring & reporting · Lead & Copper Rule began Oct 2024 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Aug 2024 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Aug 2024 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Aug 2019 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Aug 2019 Resolved
Max contaminant level (MCL) · Arsenic health-based began Apr 2015 Resolved
Monitoring & reporting · EPA contaminant 2039 began Jul 2006 Resolved
Monitoring & reporting · EPA contaminant 2955 began Jul 2006 Resolved
Monitoring & reporting · Nitrate began Jan 1999 Resolved
Monitoring & reporting · Total coliform began Feb 1995 Resolved
Max contaminant level (MCL) · Total coliform health-based began Aug 1993 Resolved

Recent enforcement actions

  • State action · SOX Aug 2025
  • State action · SOX Aug 2025
  • State action · SIF Jun 2025
  • State action · SIF Jun 2025
  • State action · SOX Jan 2025
  • State action · SFJ Jan 2025
  • State action · SIE Oct 2024
  • State action · SFJ Oct 2024

This profile is built from EPA public records for system IA4333089 — 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.