http://www.scientificamerican.com/article/pharmaceuticals-in-the-water/
https://www.youtube.com/watch?v=jLdXmE6sLiE
http://usatoday30.usatoday.com/news/health/2008-09-14-drugs-flush-water_N.htm
http://www.disabled-world.com/fitness/nutrition/foodsecurity/contamination.php
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