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Water system · PWSID AK2340167

KOYUK PUBLIC WATER SYSTEM

KOYUK, AK · ~277 people served

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

PWSID

AK2340167

State

Alaska

City

KOYUK

Population served

277

Primary source

GU

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

490

Violations on record

1

Unaddressed

11

Health-based

273

Enforcement actions

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

Other began Jun 2012 Unaddressed
Monitoring & reporting · EPA contaminant 0200 began Jul 2025 Resolved
Monitoring · Lead & Copper Rule began Jul 2025 Resolved
Monitoring & reporting · EPA contaminant 0999 began Jul 2025 Resolved
Monitoring & reporting · EPA contaminant 0999 began May 2025 Resolved
Monitoring · Lead & Copper Rule began May 2025 Resolved
Monitoring & reporting · EPA contaminant 0200 began May 2025 Resolved
Monitoring & reporting · EPA contaminant 0999 began Nov 2024 Resolved
Monitoring & reporting · EPA contaminant 0200 began Nov 2024 Resolved
Monitoring · Lead & Copper Rule began Nov 2024 Resolved
Treatment technique · EPA contaminant 5200 health-based began Oct 2024 Resolved
Reporting · EPA contaminant 5200 began Oct 2024 Resolved

Recent enforcement actions

  • State action · SOX Aug 2025
  • State action · SOX Jun 2025
  • State action · SOX Jun 2025
  • State action · SOX Jun 2025
  • State action · SOX Jun 2025
  • State action · SOX Jun 2025
  • State action · SIB Apr 2025
  • State action · SIB Apr 2025

This profile is built from EPA public records for system AK2340167 — 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.