Taking the forever out of forever chemicals.

From American public media, this is marketplace tech.

I'm Lily Dramale. When the chemical's company DuPont unveiled Teflon in 1946, the idea of non-stick no-stain pots and pans seemed like a miracle.

We now know they contain forever chemicals, also known as P-FAS, which don't break down and are in everything from cookware to

clothing to cosmetics.

The water, millions of us drink, is also now contaminated with forever chemicals, and research shows there's no safe

level of exposure to them. With the EPA now rolling out limits on pea fast and drinking

water for the first time,

we asked Tasha Stober, senior scientists

at the Environmental Working Group,

about the tech used to filter them.

There are a number of ways to do it.

There's granular activated carbon. When you use that for drinking water treatment. of move P-FAS. Is that a thing that you drop into a big pot of water or a big vat of it? How does that work?

I mean there's a number of different types of granular activated carbon but you can kind of think about it the same way as

there's granular activated filters that you use in your home as well. So it's just at a different scale when you use it for community water treatment. They're quite large.

I'm picturing a giant Brita right now. Is that basically what you're saying?

You could think of it as a giant Brita. So at the at the drinking water treatment level you have very large granular activated carbon filters that

drinking water systems can install and those are quite effective at removing PFAS, the PFAS stick to those filters and they're removed

from the water.

And there's a couple of other different ways

that you can remove it as well.

There are a couple of plants that have installed

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