Why does old water taste bad

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Weight loss story: " I did cardio and weight training 5 days to lose 44 kilos". Stomach cancer. Whooping cough. Count: We have sent you a verification email. To verify, just follow the link in the message. Created: Apr 19, , IST. We all drink water left overnight on our side table, in a bottle or a tumbler. Or even from the water bottle left in the car overnight.

But how safe it is to have water that's been sitting overnight or even longer? The taste of water Do you sometimes drink old water from the glass left on the nightstand and feel that it tastes different? Well, this happens because of carbon dioxide. When you leave the glass of water uncovered for about 12 hours, carbon dioxide in the air starts to mix with it.

This reduces the pH level of the water and gives it an off taste. But even then this water is safe to drink. These microbes beget more microbes in environments with balmy temperatures. The colder the room the longer the bottle or glass of water will keep. Most tap and bottled water also contains low levels of chlorine compounds designed to keep microorganisms at bay. As Smart News writer Rose Eveleth noted back in , bottled water itself doesn't go bad, though bottled water does carry an expiration date.

Plastic and environmental chemicals can sneak in. As water rises to room temperature, its aroma and bouquet, so to speak, really open up. The warmer the drink, the faster the molecules are bouncing around, and the stronger the aroma. Riese always tastes his premium waters—such as Danish spring water 1 —at room temperature. He recommends drinking water chilled to a cool but not cool 59 degrees Fahrenheit—like, you know, a fine red wine.

Water treatment plants add chlorine to wipe out potentially deadly pathogens. Chlorine is volatile, and it quickly dissipates into the air. At this point, we tap water drinkers may just be conditioned to think chlorine means fresh water. Riese, who grew up in Germany drinking unchlorinated water, disagrees here on aesthetic grounds. Dissolved gases are another part of the taste. As water sits out, small amounts of carbon dioxide dissolve into the water.