Division of Environmental Quality

Cleaning Up a Mercury Spill

What Not To Do:

Large Spills

The reportable quantity for mercury is 1 pound (approx. 2 tablespoons of liquid). For larger mercury spills, please contact the Missouri Department of Natural Resources 24-hour Environmental Emergency Response hotline at 573-634-2436 for technical advice and assistance.

For any spill involving 1 pound or more, federal law requires the spiller to report the incident to the National Response Center at 800-424-8802.

Small Spills

These guidelines should be useful when dealing with very small mercury spills such as a broken household thermometer (approx. 1 gram), thermostat (approx. 3 grams), or compact fluorescent bulb (approx. 5 milligrams).

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