Although using mercury-free products is the preferred method of source reduction, recycling of mercury is sometimes an alternative. Recycling dental amalgams is very successful and can substantially reduce the amount of mercury that ends up at publicly owned treatment works. Large particles of amalgam can easily be removed using drain traps and screens, but fine dust passes through. Systems are available to treat rinse waters contaminated with old amalgam that is too fine to be caught in traps or on screens. Such systems are currently being evaluated by several U.S. organizations.
Several recycling companies accept mercury-containing waste. The companies differ in the type of mercury waste accepted and the transportation requirements. The mention of these companies does not constitute an endorsement by EPA, nor is this list exhaustive.
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