The UK has some of the best drinking water in the world, my local water company does hundreds of thousands of tests each year of which &lt;.3% where over there own limits which are mode stringent than required standards, you can do these things to a given standard if you want to.<p>Example report for my region<p><a href="http:&#x2F;&#x2F;www.ywonline.co.uk&#x2F;web&#x2F;WQZ.nsf&#x2F;0&#x2F;26AA27A47E437B1B802574FD003D96AB&#x2F;$file&#x2F;Holderness%202008%20WSZ.pdf" rel="nofollow">http:&#x2F;&#x2F;www.ywonline.co.uk&#x2F;web&#x2F;WQZ.nsf&#x2F;0&#x2F;26AA27A47E437B1B8025...</a>