Plastic water bottle caps are color coded based on the type of water: blue caps indicate "spring water"; black caps signify alkaline water; green caps signal flavored water, and white caps mean ...

Did you know that the first plastic bottle for drinking water was introduced in the 1970s? Since then, bottles have become part of daily life. But have you ever noticed the different colours of their ...

You might have noticed an array of different-colored caps on bottled water at the store, but does that really mean anything about the bottle's contents?