Perchlorates are regulated as a contaminant of concern by the EPA due to their persistence in groundwater and potential thyroid effects. Facilities that handle, store, or use perchlorate compounds may be subject to state-level environmental reporting requirements and EPA maximum contaminant level rules for drinking water. Importers and downstream users should review applicable federal and state environmental obligations before procurement.

Unlike the European Union and several other jurisdictions that have banned potassium bromate as a food additive, the US has not issued a federal prohibition, though FDA has encouraged bakers to voluntarily discontinue its use. Importers of potassium bromate intended for food-contact applications should confirm current FDA guidance and any state-level restrictions — California, for example, requires a Proposition 65 warning for bromate-treated baked goods — and consult a licensed customs broker or regulatory counsel for admissibility requirements.