Perchlorate is a chemical from rocket fuel and explosives production. It contaminates water near industrial and military sites, disrupting thyroid function in developing fetuses and children.

Perchlorate, primarily from aerospace and defense industries, has contaminated water supplies across the US. It interferes with iodine uptake in the thyroid, potentially affecting hormone production crucial for fetal and child development. Detected using ion chromatography, perchlorate poses regulatory challenges due to debate over safe levels. Treatment options include ion exchange and biological reduction, but prevention through proper industrial waste management is crucial for long-term mitigation.