Tapcensus

Oxamyl (Vydate) violations in Washington

7 active public water systems in Washington had a Oxamyl (Vydate) violation in the past three years, 1 of them in the latest quarter of EPA's data. What Oxamyl (Vydate) is and why it matters.

Health effects: Short-term exposure above the MCL can cause nervous system effects including headache, blurred vision, muscle weakness, and nausea, consistent with acetylcholinesterase inhibition by carbamate compounds. Chronic effects include nervous system damage. Children are most susceptible to acute neurological effects. EPA has not classified oxamyl as a human carcinogen.

Systems with a Oxamyl (Vydate) violation

Latest quarter first, then largest first
SystemServesStatusRules violated, 3 yrUnresolved
Snoqualmie Casino
Snoqualmie · County
3,000 3 0
Makah Neah Bay
Neah Bay · County
1,300 11 0
Mt. Vista Dungeness Golf Course
Sequim · County
517 3 0
Wellpinit School
County
473 5 0
Fort Simcoe Job Corps Ctr
Toppenish · County
230 8 1
Chief Kitsap Academy
Poulsbo · County
120 6 0
San Poil
Keller · County
86 5 0
About this data

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