Tapcensus

Cyanide violations in Alaska

6 active public water systems in Alaska had a Cyanide violation in the past three years. What Cyanide is and why it matters.

Health effects: Acute high-dose cyanide exposure interferes with cellular oxygen use and can cause rapid deterioration of the central nervous system, including headache, dizziness, and in severe cases, loss of consciousness. Chronic exposure at lower levels is associated with thyroid dysfunction and nerve damage. Most drinking water violations pose chronic rather than acute risk.

Systems with a Cyanide violation

Latest quarter first, then largest first
SystemServesStatusRules violated, 3 yrUnresolved
Denali Main / Front Country
Denali Park · Denali Borough County 		4,122 7 1
Silver Bay Seafoods False Pass
False Pass · Aleutians East Borough County 		470 7 0
Forest Park TC
Chugiak · Anchorage Municipality County 		175 12 3
Usfs Kenai Lake Work Center
Crown Point · Kenai Peninsula Borough County 		162 3 0
Grace Evangelical Lutheran
Kenai · Kenai Peninsula Borough County 		110 3 0
Kenai Refinery Modular Offices
Nikiski · Kenai Peninsula Borough County 		71 2 0
About this data

A system is counted once if any of its violations in the past three years involved Cyanide, including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Cyanide alone.

Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Alaska records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet. Retrieved from ECHO on Oct 11, 2026.