Nassim Taleb taught me that the absence of known danger is not the same as safety.<p>Repeat that to yourself the next time you read your cities water report. It&#x27;s not &quot;I know my water is safe&quot; it&#x27;s &quot;I know I don&#x27;t face these specific dangers. What else could be in the water that they don&#x27;t test for?&quot;<p>Look into reverse osmosis.