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Water system · PWSID IA6739095

ONAWA MUNICIPAL WATER PLANT

ONAWA, IA · ~2,906 people served

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

PWSID

IA6739095

State

Iowa

City

ONAWA

Population served

2,906

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

Latest detections from EPA’s UCMR5 monitoring (through Sep 2025). Levels in parts per trillion (ppt).

Lithium

60,000 ppt

limit —

No federal limit

Violations & enforcement

1

Violations on record

0

Unaddressed

0

Health-based

3

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement May 1991. Official EPA record →

Monitoring & reporting · Nitrate began Apr 1988 Resolved

Recent enforcement actions

  • State action · SOX May 1991
  • State action · SOX May 1991
  • State action · SO7 Feb 1982

This profile is built from EPA public records for system IA6739095 — 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.