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Water system · PWSID OR4100826

SISTERS, CITY OF

SISTERS, OR · ~3,778 people served

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

PWSID

OR4100826

State

Oregon

City

SISTERS

Population served

3,778

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

103

Violations on record

0

Unaddressed

1

Health-based

84

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Sep 2015. Official EPA record →

Monitoring & reporting · Total coliform began Aug 2015 Resolved
Monitoring & reporting · Total coliform began Mar 2013 Resolved
Monitoring & reporting · EPA contaminant 3028 began Jan 2012 Resolved
Monitoring & reporting · EPA contaminant 2037 began Jan 2009 Resolved
Monitoring & reporting · EPA contaminant 2035 began Jan 2009 Resolved
Monitoring & reporting · EPA contaminant 2036 began Jan 2009 Resolved
Monitoring & reporting · EPA contaminant 2032 began Jan 2009 Resolved
Monitoring & reporting · EPA contaminant 2010 began Jan 2009 Resolved
Monitoring & reporting · EPA contaminant 2020 began Jan 2009 Resolved
Monitoring & reporting · EPA contaminant 2031 began Jan 2009 Resolved
Monitoring & reporting · EPA contaminant 2034 began Jan 2009 Resolved
Monitoring & reporting · EPA contaminant 2005 began Jan 2009 Resolved

Recent enforcement actions

  • State action · SOX Sep 2015
  • State action · SOX Jun 2013
  • State action · SOX May 2013
  • State action · SIA Feb 2013
  • State action · SOX May 2009
  • State action · SOX May 2009
  • State action · SOX May 2009
  • State action · SOX May 2009

This profile is built from EPA public records for system OR4100826 — 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.