I heard that cold water is not good for the liver and I drink everything at room temperature, never use ice. Luckily I don't like it cold.
Drinking water with a meal is not good for digestion, you can drink afterwards.
Once I went to a health spa and they did not serve water till after the meal.
When I came to this country I had never heard of drinking water with a meal.I always assumed it was an American custom. And this year when we went to a nice restaurant in Holland they still did not serve water. I must say we had wine :)