Which would you rather drink from, a public water fountain or a public toilet? Well, it turns out that the water fountain may have more bacteria. A number of studies have shown that public fountains are founts for germs—one study by the National Sanitation Foundation (NSF International) found that the dirtiest spots in public schools are the water fountains. Think about it: Bathrooms are cleaned multiple times per day, but when was the last time you saw a water fountain being cleaned? Consider that the next time you want to refill a water bottle at a public fountain on your travels, and maybe buy a new bottle instead.