It doesn't take him long to finish; once Ginko gets started on the water, it hits him how thirsty he really was, and he downs the rest so fast he almost spills it.

He pulls in a sharp breath (and almost starts coughing, jeez, he could have been more careful there) when he finishes the water, and passes Jyushimatsu's satchel back to him. "--Better. Sorry you had to deal with that - I'm usually better at keeping out of the sun."