Not Medical Advice:
No. Cold water won’t make you fat. In an article of Daily Mail published on March 27, 2010, it’s the possible pollutants that are so difficult to remove from our water supply that have been linked to a number of health complaints - and of these, may even trigger weight gain.
According to Stopcancerfund.org, Bisphenol A (BPA) used in many hard plastics, including some food and beverage containers, plastic baby bottles and sports water bottles (in the lining of all canned food and beverages) has been linked to heart disease and diabetes in adults, possibly because it increases the risk of obesity.
Some people believe that drinking a glass of cold water helps lose weight. But as stated at Popsugar.com, drinking a glass of ice water rather than a glass of water at room temperature only burns about eight calories.
Even though cold and warm water are equally hydrating, the idea behind drinking cold water is that since it's so cool and refreshing, it's more satisfying after a workout, so you're likely to drink more, which makes for more effective hydration.
It's a no-brainer that you need plenty of water, especially after a workout. But you may not be guzzling enough. In fact, on average, Americans drink a little more than four glasses a day, which is a drop in the bucket. Short-changing yourself can affect your workout, your weight — even your brainpower. Check out some tips on how to make sure you're getting your fill to stay healthy and revved up for anything at Fitnessmagazine.com.