TYONEK WATER SYSTEM

TYONEK, AK · ~206 people served

Check your exact address → TYONEK overview

100

Excellent

PurityRadar safety score

PWSID

AK2240472

State

Alaska

City

TYONEK

Population served

206

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

248

Violations on record

Unaddressed

Health-based

230

Enforcement actions

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

Monitoring & reporting · Lead & Copper Rule began Jan 2025 Resolved

Monitoring & reporting · Lead & Copper Rule began Jan 2024 Resolved

Monitoring & reporting · EPA contaminant 3014 began Sep 2023 Resolved

Monitoring & reporting · Lead & Copper Rule began Jan 2023 Resolved

Monitoring & reporting · Lead & Copper Rule began Jan 2022 Resolved

Monitoring & reporting · EPA contaminant 0999 began Jul 2021 Resolved

Monitoring · Lead & Copper Rule began Jul 2021 Resolved

Monitoring · Lead & Copper Rule began Jun 2021 Resolved

Monitoring · Lead & Copper Rule began May 2021 Resolved

Monitoring · Lead & Copper Rule began Feb 2021 Resolved

Monitoring & reporting · Lead & Copper Rule began Jan 2021 Resolved

Other · EPA contaminant 7000 began Jul 2020 Resolved

Recent enforcement actions

State action · SIF Oct 2025
State action · SIE Oct 2025
State action · SOX Sep 2025
State action · SOX Oct 2023
State action · SIA May 2022
State action · SOX Feb 2022
State action · SIB Apr 2021
State action · SIF Apr 2021

This profile is built from EPA public records for system AK2240472 — 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.