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Michael Gann, of Inwood, assembled at least seven IEDs by mixing potassium perchlorate and aluminum powder, officials say. Gann ordered the precursor chemicals and over 50 […] ...

Perchlorate has been found in approximately 4% of over 3,800 public water systems across the U.S., with perchlorate levels ranging from 4 µg/L to 420 µg/L. DRINKING WATER REGULATORY PROCESS The EPA, ...