Mercury in CFLs

• Light is created in CFLs when an electric current runs through a tube containing a small amount (less than 4 mg) of mercury vapor. The energized vapor creates ultraviolet light. The ultraviolet light excites the phosphor coating on the tube that then emits visible light.
  
  

Mercury From Other Sources

• The Environmental Protection Agency estimates that broken CFLs would add 0.16 percent of the total human-caused mercury emissions. Most emissions come from coal-fired electrical power.
  
  

Recycling CFLs

• Fortunately, all parts of the CFLs are recyclable, including the mercury. Check to see if your city has a program to accept unbroken CFLs. Also, many large hardware stores have initiated CFL recycling programs.
  
  

Disposing of Broken CFLs

• The EPA recommends special steps be taken to remove a broken CFL from the home.
  
  

Other Energy-Saving Options

• LED lights are another light option for the home. The bulbs are expensive but last a minimum of 22 years, based on average use.