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Water system · PWSID OR4100613

PENDLETON, CITY OF

PENDLETON, OR · ~16,996 people served

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

PWSID

OR4100613

State

Oregon

City

PENDLETON

Population served

16,996

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

PFHxS

Perfluorohexanesulfonic acid

4.8 ppt

limit 10 ppt

Below EPA limit

Violations & enforcement

35

Violations on record

0

Unaddressed

8

Health-based

52

Enforcement actions

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

Monitoring & reporting · Haloacetic acids (HAA5) began Oct 2024 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Oct 2024 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Jul 2024 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Jul 2024 Resolved
Other · EPA contaminant 7000 began Oct 2023 Resolved
Other · EPA contaminant 7000 began Jul 2023 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2019 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2019 Resolved
Monitoring & reporting · EPA contaminant 0300 began Nov 2018 Resolved
Monitoring & reporting · EPA contaminant 0200 began Nov 2018 Resolved
Monitoring & reporting · EPA contaminant 0200 began Nov 2018 Resolved
Monitoring & reporting · EPA contaminant 0300 began Feb 2015 Resolved

Recent enforcement actions

  • State action · SIF Sep 2025
  • State action · SOX Jan 2025
  • State action · SOX Jul 2024
  • State action · SOX Jul 2023
  • State action · SOX Apr 2019
  • State action · SOX Jan 2019
  • State action · SOX Apr 2015
  • State action · SOX Jun 2012

This profile is built from EPA public records for system OR4100613 — 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.