Chromium 6 was also THE big poison in drinking water too, wasn’t it?
Chromium 6 is a whole different subtance than perchlorate. Chromium 6 can be an industrial toxin depending on the amount of dosage and the method of exposure (ingestion or inhalation). Perchlorate isn’t inhaled because it is a salt.
The infamous case of Chromium 6 portrayed in the movie Erin Brockovich is about Hinkley, California, and involved Chromium 6 at 580 parts per billion. The safe drinking water level for perchlorate is deemed to be six (6) parts per billion; which is not coincidentally the same amount found in water in the Colorado River Aqueduct which supplies water to Southern California. Southern California is shutting down local water wells with about 10 parts per billion of perchlorate and shifting to water from the Colorado River Aqueduct which has about the same amount of perchlorate (6 ppb’s) at a gargantuan mark up in cost with no discernible health benefits.