Researchers Find Toxic Metals in E Cigarette's Johns Hopkins Bloomberg School of Public Health 150 million vapes end up in the landfill each year in the United States., Their plastic cases will persist in our environment for hundreds of years and many contain lead and mercury that can leach Vape Waste Disposal Solutions for Schools: Compliant Management of E Cigarette Hazardous Materials Toxic metals in vapes may pose major health risks for youth, study finds National Globalnews.ca