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Water system · PWSID WA5363750

OMAK CITY OF

Omak, WA · ~4,940 people served

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

PWSID

WA5363750

State

Washington

City

Omak

Population served

4,940

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 Nov 2023). Levels in parts per trillion (ppt).

Lithium

11,600 ppt

limit —

No federal limit

PFPeA

3.4 ppt

limit —

No federal limit

Violations & enforcement

4

Violations on record

0

Unaddressed

0

Health-based

11

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Feb 2018. Official EPA record →

Other · EPA contaminant 7000 began Jul 2017 Resolved
Monitoring · Lead & Copper Rule began Nov 2016 Resolved
Monitoring & reporting · Nitrate began Jan 2007 Resolved
Monitoring & reporting · Lead & Copper Rule began Jul 1993 Resolved

Recent enforcement actions

  • State action · SOX Feb 2018
  • State action · SOX Dec 2016
  • State action · SOX Jan 2008
  • State action · SOX Jan 2008
  • State action · SOX Jan 2008
  • State action · SOX Jan 2008
  • State action · SOX Jan 2008
  • State action · SOX Jan 2008

This profile is built from EPA public records for system WA5363750 — 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.