Updated: July 31, 2006
Indiana Section American Water Works Association
Plain Talk About Water For Consumers
 
Question: Why does my dishwater leave spots on my glasses?

Answer: The spots that may appear on glassware after it is washed and air-dried are caused by nontoxic minerals that remain on the glass when the water evaporates. Commercial products are available that allow the water to drain from the glassware more completely.
 
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