First it was lead pipes, now it's copper...

Copper may play key role in Alzheimer's Disease - latimes.com

It's funny how metals in water pipes never seem to be a good idea.

Then again, plastic pipes probably secrete hormone affecting chemicals that are drying up our vital bodily fluids and shrinking genitalia.

I also have quietly dismissed my wife using a filter jug for most of her drinking water.  Now I am not so sure.

Anyway, go read the article: it's quite interesting