You do not. Even weeks after people were kicked out of the temporary accommodations and told to go back to their homes the smell of chlorine was omnipresent across the town. What congressman Johnson claimed at the townhall was that the levels were safe which appears to be based on acute rather than long-term exposure data.
The funny thing is, later down in the thread someone says the EPA already admitted their instruments can't detect toxin levels that are already known to be hazardous to health. So indeed their sampling method is wrong (or at least inadequate).
