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Water system · PWSID OR4100237

HILLTOP IMPROVEMENT DISTRICT

COTTAGE GROVE, OR · ~45 people served

Check your exact address → COTTAGE GROVE overview
100
Excellent
PurityRadar safety score

PWSID

OR4100237

State

Oregon

City

COTTAGE GROVE

Population served

45

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

148

Violations on record

0

Unaddressed

26

Health-based

88

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Aug 2024. Official EPA record →

Other · EPA contaminant 7000 began Oct 2023 Resolved
Monitoring & reporting · Lead & Copper Rule began Oct 2023 Resolved
Other · EPA contaminant 7500 began Mar 2011 Resolved
Max contaminant level (MCL) · Arsenic health-based began Oct 2010 Resolved
Other · EPA contaminant 7500 began Aug 2010 Resolved
Max contaminant level (MCL) · Arsenic health-based began Jul 2010 Resolved
Max contaminant level (MCL) · Arsenic health-based began Apr 2010 Resolved
Max contaminant level (MCL) · Arsenic health-based began Jan 2010 Resolved
Max contaminant level (MCL) · Arsenic health-based began Oct 2009 Resolved
Max contaminant level (MCL) · Arsenic health-based began Jul 2009 Resolved
Max contaminant level (MCL) · Arsenic health-based began Apr 2009 Resolved
Max contaminant level (MCL) · Arsenic health-based began Jan 2009 Resolved

Recent enforcement actions

  • State action · SOX Aug 2024
  • State action · SIF Jan 2024
  • State action · SOX Dec 2023
  • State action · SIA Apr 2011
  • State action · SIA Feb 2011
  • State action · SIE Feb 2011
  • State action · SOX Feb 2011
  • State action · SIA Oct 2010

This profile is built from EPA public records for system OR4100237 — 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.