Before you take a gulp of water, try to mentally trace where that water that just gushed out of your taps has been: How did it go from that weird-tasting raindrop to the clear, odorless water that is sitting in your glass now?
Safe drinking water is a privilege Americans often take for granted — until a health crisis like the one in Flint, Mich., happens that makes us think about where it comes from and how we get it....
http://www.npr.org/2016/04/14/473806134/how-do-we-get-our-drinking-water-in-the-u-s?ft=nprml&f=1001
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