Using "water".

It is ok poeple understand what you mean. But formally, you say a glass of water.

I say that all the time. No, not all the time-- sometimes I say, 'Just water, please'. Of course, I am not a 'Miss', but I think that is irrelevant.

Ms M?

I also use it. I find it easier than saying "a bottle of...", each time. And, in cafés which have both tap and bottled water, the meaning is clear. The article makes all the difference.

I'd like water.

I'd like a water please.

........

Strange how most folks can accept "a coffee" or "a soda", but then reject "a water".

I'd use "a water" in a bar, not at home. It's a clear ellipsis. But tastes differ.

Yes, restaurants are settings when nouns that don't usually take a countable form DO take a countable form.

The waiter says "Okay, so that's two coffees, two Cokes, and a water. Is that right?"

Perfectly normal.

Marius HancuI'd use "a water" in a bar, not at home. It's a clear ellipsis. But tastes differ.

Tastes in water?