Water can help you to alleviate acid reflux in a number of ways. Firstly, it can wash food and acid back down the esophagus and into the stomach, thereby instantly addressing the problem.
At the same time, drinking water will help you to cool and soothe the area that is in pain, just like putting an ice pack against an injury.
Finally, water is also needed to produce saliva and digestive enzymes inside the stomach. One of the most common causes of acid reflux infact is dehydration. Bottom line? Drink more water!