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Water system · PWSID AK2260040

KOLIGANEK WATER SYSTEM

KOLIGANEK, AK · ~170 people served

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

PWSID

AK2260040

State

Alaska

City

KOLIGANEK

Population served

170

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

250

Violations on record

0

Unaddressed

10

Health-based

182

Enforcement actions

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

Monitoring & reporting · Lead & Copper Rule began Mar 2024 Resolved
Monitoring & reporting · Nitrate began Jan 2024 Resolved
Monitoring & reporting · Lead & Copper Rule began Jul 2023 Resolved
Monitoring & reporting · Nitrate began Jan 2022 Resolved
Other · EPA contaminant 7000 began Oct 2021 Resolved
Monitoring & reporting · Nitrate began Jan 2020 Resolved
Other · EPA contaminant 7000 began Oct 2019 Resolved
Monitoring · Lead & Copper Rule began Sep 2019 Resolved
Treatment technique · EPA contaminant 0700 health-based began Aug 2018 Resolved
Treatment technique · EPA contaminant 0700 health-based began Aug 2018 Resolved
Treatment technique · EPA contaminant 0700 health-based began Aug 2018 Resolved
Treatment technique · EPA contaminant 0700 health-based began Aug 2018 Resolved

Recent enforcement actions

  • State action · SIE Dec 2025
  • State action · SFH Dec 2025
  • State action · SIE Dec 2025
  • State action · SIB Oct 2025
  • State action · SIF May 2025
  • State action · SFH May 2025
  • State action · SIE May 2025
  • State action · SOX Feb 2025

This profile is built from EPA public records for system AK2260040 — 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.