Their water ration was down to half a cup a man.

I save the bulk of my water ration for dessert.

The reduction in their daily water ration made them uneager to talk to each other.

Breakfast was frugal and the water ration had run low.

The next day the captain increased the water ration by one pint per man.

Rex's water ration for the day was all used up.

And why would I want to waste my water ration to do that?

That means he will not be using his water ration.

By the end of the second week, the fresh water ration had to be cut.

So I had water rations to last me 124 days.