The second chemical is n't believed to pose new health risks , the CDC says . Comment: A state official called the late disclosure `` completely unacceptable '' PPH is not believed to pose any new health hazard for the people of Charleston , the federal Centers for Disease Control and Prevention said . The January 9 leak prompted a do-not-use order for up to 300,000 people .
The second chemical is n't believed to pose new health risks , the CDC says . Comment: A state official called the late disclosure `` completely unacceptable '' The January 9 leak prompted a do-not-use order for up to 300,000 people .