Stuff like this is pretty common in the military. When I was stationed at Camp Lejeune NC, my wife worked as a reporter for a local paper. One of her assignments was interviewing people at a town hall style meeting regarding chemicals in the base water supply. Children of people that lived in base housing had an abnormally high cancer rate, but the military denied that any of the contaminated water was leaking into the drinking water.

I also remember the barracks I lived in had old asbestos floor tiles and the walls were covered in lead paint. They eventually renovated the barracks, and instead of getting rid of the lead paint, they just painted over it. The asbestos tiles weren't dealt with, and all they said was "just don't use a floor buffer and you'll be fine". There was also a cleaning station where we'd clean our rifles, no safety warnings or instructions were given, and we thought it was just a cleaning solution. Later we saw a warning sticker on it that said to use full eyes, face, and hand protection because the cleaning solution could cause neurological damage. Just waiting for health probelms to crop up once I'm older :/