US wildfire suppressants rife with toxic heavy metals, study finds

Suppressants a major' source of toxic pollution that causes heavy-metal levels to spike in the environment

The US federal government and chemical makers have long concealed the contents of pink wildfire suppressants widely spread by firefighting aircraft to contain blazes, but new test results provide alarming answers - the substances are rife with cadmium, arsenic, chromium and other toxic heavy metals.

The suppressants are a major" source of toxic pollution that causes heavy-metal levels to spike in the environment, and the products themselves contain metal levels up to 3,000 times above drinking water limits, the peer-reviewed research found.