bacterial contaminants

Which Water Bottle Has More Bacteria Bottled?

by

Which Water Bottle Has More Bacteria Bottled? The different types of bottles we tested each hosted a unique combination of bacteria types. Surprisingly, 99 percent of the germs on the squeeze-top bottles and 98 percent of the germs on the screw-top bottles are the bad kind – gram-negative rods (of which E. coli is one

How Frequently Is Bottled Water Tested For Bacterial Content?

by

How Frequently Is Bottled Water Tested For Bacterial Content? Both kinds of water are tested regularly for bacteria and most synthetic organic chemicals, but city tap is typically assessed much more frequently. For example, bottled-water plants must test for coliform bacteria just once a week; city tap needs to be tested 100 or more times