and the U.S. Environmental Protection Agency (EPA) have long referred to four ensemble levels — A, B, C and D. Table 1 describes the protection provided as well as the typical and optional types of ...

“After searching our inventory of personal protective equipment, we identified excess supplies and sent them to those on the frontlines of this fight. At EPA we are here to help in any way we ...

That's, in part, because the EPA action level – 15 parts per billion of lead in the water – is not a threshold for public health, so a reading below that number doesn't mean the water is safe.