The article said there were molecules on the surface. (Either from meteors or hydrogen from the solar wind making hydroxyl (check wikipedia) and/or water with oxygen from rocks.) Quite a lot more than ever expected.

This is good, a moon colony might even be self sufficient in water.

(You have to wonder what other weird, really reactive radicals are on the surface from the solar wind? It will be fun to check for erosion on the equipment left by the moon landings. Any real chemists around? :-) This might be a future problem.)

Edit: The information asked for is in the article, btw. After the heading "Where the water comes from". :-)

Edit: A bit of syntax.