We’ve made some changes to EPA.gov. If the information you are looking for is not here, you may be able to find it on the EPA Web Archive or the January 19, 2017 Web Snapshot.

Dioxin in Art Studio Ball Clay

In 1996, dioxins were discovered in ball clay as a result of an investigation to determine the sources of elevated dioxin levels in two chicken samples from a national survey of poultry. The investigation indicated that the contamination source was ball clay added to chicken meal as an anti-caking agent. In the mid-2000's, EPA conducted a study to evaluate the potential exposure scenario of the use of ball art clay in ceramic art studios.