Ceramic and glassware are often decorated with permanent, kiln-fired colors that have traditionally contained heavy metals. The use of these metals, primarily lead and cadmium, has come under examination in relation to negative health and environmental impacts.
When in contact with foods and beverages, the metals can leach out of the decorations. Prolonged or repeated food contact can result in chronic poisoning. Ceramic or glass packaging that enters the waste stream also leaches the poisons, which can have severe consequences on the environment and our water supply.
In response to these concerns, there are a number
of regulations limiting the amount of heavy metals in food-bearing vessels and disposable packaging. The FDA and EPA have established national guidelines, in addition to which there are individual state laws and voluntary industry standards. The summaries and links below are provided to help you understand the regulations and potential consequences of heavy metal use in glass and ceramic decoration, and to offer you safe and effective decorating options.