&gt; What&#x27;s wrong with your tap water? Don&#x27;t they have the same safety standards to meet?<p>Tap water quality varies from place to place. For example, in SV (at least Sunnyvale, Santa Clara) it stinks so badly that I barely care whether it meets safety standards or not. OTOH, in my home city it&#x27;s pretty fine and at some other place I lived it was halfway between.