Used Mercury Thermometer Exchange Set for March 3

Communications Director

Kristin Farley
(865) 215-2589

400 Main St., Room 691
Knoxville, TN 37902

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Used Mercury Thermometer Exchange Set for March 3

Posted: 02/19/2007
The City of Knoxville Public Service Division is pleased to join with Earth Fare and, the Tennessee Valley Earth Partnership, to conduct a mercury thermometer exchange for City of Knoxville and Knox County residents at the Earth Fare store at Turkey Creek, to be held on Saturday, March 3, 2007.

The exchange will take place from 11 AM to 3 PM, or until the supply of thermometers is exhausted. This was a very successful event held last year with all thermometers exchanged before the end of the event scheduled times.

Mercury thermometers are both an environmental and a health and safety problem. Broken thermometers are a potential source on injury from the broken glass, as well as a chemical hazard from the mercury in the thermometer. This event will offer an opportunity for citizens to replace used mercury thermometers with battery-operated digital thermometers, provided by the sponsoring organizations. The digital thermometers will be available to the public at no cost, in exchange for used mercury thermometers. Residents may bring in as many used thermometers to exchange as they wish from family, friends or neighbors.

Please do not bring outdoor thermometers with red liquid. They do not contain mercury, which is silver-colored. Thermometers with red liquid (colored alcohol) can be placed in your household trash.For safety while transporting the thermometers, please bring them in their storage cases. If the case is not available or the thermometer is broken, the thermometer can be brought in a 12-ounce plastic water bottle with a screw-cap lid.

This exchange is limited to mercury thermometers from households; other type of mercury-containing waste such as old non-digital thermostats, barometers, manometers and other household mercury waste or devices should be brought to the Knoxville Household Hazardous Waste Center, where it will be accepted for disposal during business hours. The Household Hazardous Waste Center is free to residents of Knox County and City of Knoxville residents only and is located at 1033 Elm Street. The Center does not accept material from businesses, or residents from out side Knox County. Additional information about the Knoxville Household Hazardous Waste Center is available at 865-215-6700.

Mercury has many toxic effects in the body. If a thermometer is broken and not properly cleaned up, tiny droplets of mercury can evaporate over time. When mercury vapor is inhaled, it enters the blood and can damage the brain, spinal cord, kidneys and liver. Children and fetuses are at special risk. Swallowing or touching mercury metal is not nearly as toxic; thus if a broken thermometer is cleaned up properly and promptly people will not be harmed.In the environment, mercury falls with rain and snow, contaminating lakes and streams and accumulating in the bodies of fish and wildlife. Natural processes can convert mercury into methylmercury, an even more dangerous form of the metal.

Mercury was used for many years in thermometers designed for household use because no alternatives were available. However, this is no longer the case today. In July 2001, the American Academy of Pediatrics issued a policy statement about the health effects of mercury, and urged doctors and parents to stop using mercury thermometers and to dispose of them properly.Parents are especially encouraged to take advantage of this opportunity to safely dispose of a household hazard and replace it with a safe substitute for free. Small children can easily break thermometers and they find the shiny drops of mercury fascinating.

In the event a mercury thermometer breaks, the public is reminded that they should NEVER use a vacuum cleaner to clean up the mercury. It can make tiny droplets in the air, increasing the problem and contaminating the vacuum cleaner as well. The state of Tennessee has a fact sheet describing proper cleanup procedures for broken thermometers at: