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Water system · PWSID OR4100867

CHENOWITH PUD

THE DALLES, OR · ~4,500 people served

Check your exact address → THE DALLES overview
100
Excellent
PurityRadar safety score

PWSID

OR4100867

State

Oregon

City

THE DALLES

Population served

4,500

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 Oct 2024). Levels in parts per trillion (ppt).

Lithium

47,000 ppt

limit —

No federal limit

Violations & enforcement

109

Violations on record

0

Unaddressed

7

Health-based

35

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Oct 2022. Official EPA record →

Max contaminant level (MCL) · Lead & Copper Rule health-based began Jul 2022 Resolved
Monitoring & reporting · EPA contaminant 3028 began Jan 2012 Resolved
Monitoring & reporting · EPA contaminant 3028 began Jan 2012 Resolved
Monitoring & reporting · EPA contaminant 3028 began Jan 2012 Resolved
Monitoring & reporting · EPA contaminant 3028 began Jan 2012 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2007 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2007 Resolved
Monitoring & reporting · EPA contaminant 2034 began Jan 2002 Resolved
Monitoring & reporting · EPA contaminant 2033 began Jan 2002 Resolved
Monitoring & reporting · EPA contaminant 2035 began Jan 2002 Resolved
Monitoring & reporting · EPA contaminant 2032 began Jan 2002 Resolved
Monitoring & reporting · EPA contaminant 2015 began Jan 2002 Resolved

Recent enforcement actions

  • State action · SOX Oct 2022
  • State action · SIE Jul 2022
  • State action · SIF Jul 2022
  • State action · SIA Feb 2013
  • State action · SOX Jan 2013
  • State action · SOX Mar 2009
  • State action · SOX Jan 2004
  • State action · SOX Sep 2003

This profile is built from EPA public records for system OR4100867 — 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.