Water should not be purposefully avoided at any point unless you are specifically told to do so by a doctor or nutritionist because of some condition, drug treatment, or upcoming operation. Most of us are aware that water makes up a huge portion of our bodies and that it is required for numerous functions throughout the body. On that note water is required for the breakdown of nutrients, one in particular being protein. As your body digests and breaks down protein into amino acids the process uses H2O, meaning the more protein you eat the more water you need to replace in your body. Going on this point alone not only is it a bad idea to avoid water while eating, it is highly recommended that you drink it.
Besides, drinking more water with meals will also help curb your appetite and it wont add extra calories to your daily intake like other beverage options will.