Home/ Directory/ IA/ MARENGO WATER SUPPLY

Water system · PWSID IA4843033

MARENGO WATER SUPPLY

MARENGO, IA · ~2,435 people served

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

PWSID

IA4843033

State

Iowa

City

MARENGO

Population served

2,435

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

20

Violations on record

0

Unaddressed

2

Health-based

103

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Aug 2020. Official EPA record →

Monitoring & reporting · Haloacetic acids (HAA5) began Aug 2019 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Aug 2019 Resolved
Other · EPA contaminant 7000 began Jul 2016 Resolved
Max contaminant level (MCL) · Total coliform health-based began Oct 2006 Resolved
Monitoring & reporting · Total coliform began May 2001 Resolved
Monitoring & reporting · Arsenic began Jul 2000 Resolved
Max contaminant level (MCL) · Total coliform health-based began Jul 1997 Resolved
Monitoring & reporting · Total coliform began Dec 1995 Resolved
Monitoring & reporting · Nitrate began Jan 1992 Resolved
Monitoring & reporting · Lead & Copper Rule began Apr 1991 Resolved
Monitoring & reporting · Nitrate began Jan 1991 Resolved
Monitoring & reporting · Nitrate began Apr 1990 Resolved

Recent enforcement actions

  • State action · SOX Aug 2020
  • State action · SOX Aug 2020
  • State action · SIF Apr 2020
  • State action · SIF Apr 2020
  • State action · SIE Oct 2019
  • State action · SFJ Oct 2019
  • State action · SIE Oct 2019
  • State action · SFJ Oct 2019

This profile is built from EPA public records for system IA4843033 — 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.