Tapcensus

Cyanide violations in Oregon

13 active public water systems in Oregon 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
Tigard, City of
Washington County 		62,500 2 0
Warm Springs Water Treatment Plant
Warm Springs · County 		3,800 16 5
Rickreall Water Association
Polk County 		1,650 6 0
Area 61
Josephine County 		260 8 1
Sunshine Plaza
Jackson County 		200 11 1
Burns Paiute
Burns · County 		155 13 3
Medford Gold Hill KOA
Jackson County 		100 7 0
Currinsville Mobile Home Park
Clackamas County 		90 7 2
Boise Cascade-Willamina Veneer
Yamhill County 		75 1 0
Nps Oregon Caves National Monument O&m
Josephine County 		75 8 0
Galice Subdivision Water CO
Josephine County 		33 13 3
Big Oak Marina
Multnomah County 		30 9 2
Kashmir Business Park LLC
Marion County 		30 7 1
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 Oregon 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.