Perchlorate is a naturally occurring and manufactured substance consisting primarily of oxygen atoms.

Perchlorate is safe at environmental levels, and the reference dose of 0.0007 mg per kg per day is safe for all populations.

No study has shown that perchlorate causes adverse effects on human health.

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Featured Study

“Health Implications of Perchlorate Ingestion” — a report from the National Research Council’s Committee to Assess the Health Implications of Perchlorate — stands as the single most authoritative and comprehensive examination of perchlorate and human health ever conducted.

In The News

Perchlorate is NOT Perchloroethylene

An important distinction to make is the difference between tetrachloroethylene, also known as perchloroethylene (PERC), and perchlorate. PERC is the solvent used by about 70% of dry cleaners in the United States, but is also used as a metal degreaser and in the...

New: The Perchlorate
Fact Book

Why EPAs Perchlorate Determination is Supported by Science and Federal Law