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On a cold winter day on the Stoneridge Dairy Farm, in Arundel, Maine, Fred Stone was worried more about his cows being cold than himself, especially his prized Brown Swiss, named Blue. "She likes to give me a hard time, as much as she can," Stone told correspondent Lee Cowan.

Fred and his wife, Laura, are only the latest generation to work this dairy; it's been in the family for over a century.

But since November of 2016, every drop of milk – that white gold that's been a reliable livelihood for generations – is now being poured right down the drain.

"It's a helluva waste," said Stone. "Even I can't drink it."

He had no idea the wastewater that the state licensed him to use to fertilize his fields was also swimming with potentially toxic chemicals, called PFAS. Now, his land, his cows (and, yes, their milk) are all contaminated.

Cowan asked, "Had you ever heard of PFAS or any of these chemicals?"

"Never," he replied.

A lot of people haven't. PFAS is an acronym for a family of man-made compounds called per- and polyfluoroalkyl substances. The CDC has listed a host of health effects believed to be associated with exposure to those chemicals, including cancer, liver damage, increased cholesterol, and a lot more. The chemicals are so highly mobile, they're not only being found in soil and ground water, but in the atmosphere, too. In fact, they've even been detected in raindrops falling in some of the most remote areas of the world.