Tapcensus

Cyanide violations in Utah

10 active public water systems in Utah 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
Roosevelt City Water System
Duchesne County 		8,000 6 0
Cedar Valley Water Conservancy
Iron County 		3,995 6 0
Moroni City
Sanpete County 		1,600 7 0
Charleston Wcd
Wasatch County 		484 8 0
Wallsburg Town Water System
Wasatch County 		440 6 0
Oak Haven Water Company
Wasatch County 		388 6 1
American Pacific
Iron County 		150 3 0
Harmony Heights Water Company
Washington County 		120 7 0
North Valley Ranches Sub
Washington County 		78 10 3
Zion Red Rock
Washington County 		61 4 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 Utah 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.