Lead is increasingly found in drinking water in {HEAD ~ many parts} of {TAIL ~ the world} stemming from industrial processes as well as geochemical mechanisms, it is regarded as highly toxic metal ions to a wide variety of organs in both humans and animals, including nervous, immune, reproductive, gastrointestinal systems 
Lead is increasingly found in drinking water in { HEAD ~ many parts } of { TAIL ~ the world } stemming from industrial processes as well as geochemical mechanisms , it is regarded as highly toxic metal ions to a wide variety of organs in both humans and animals , including nervous , immune , reproductive , gastrointestinal systems
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