I reread my comment from ...
Published by Joseph Cotruvo, President at Joseph Cotruvo & Associates, Water , Environment and Public Health
I reread my comment from several days ago and want to correct it. What I meant to say was: I suppose you have to do it by exception. If the supplier is NOT a member of the International Bottled Water Association or equivalent and says so on the label, or is certified by an appropriate organization, or a national or international commercial brand, then you could conclude that there is a possibility that it might not be acceptable quality. You can easily check for bacteria using a colilert type test. THe mmajor brands and certified products are good and tested. The local uncertified brands or non brands have more potential for being questionable quality..