Yeah, I was surprised to see one there too. I'm not sure if it is the highest quality in the world, but it definitely works great. I can no longer smell/taste the chlorine and my skin feels much better afterwards.
This is indeed something many of us often don't think about..
We drink good water, we are healthy in many other ways, but meanwhile we are dousing ourselved in nasty chlorinated water.. all over our bodies, into our lungs, eyes, mouth.
It's gnarly and I pray all who read this thread go out and get some filters!