[Van the man]

Anyone recommend something to get rid of water stain?

[Easyclean Windows]

Water stain? what are you trying to remove it from?

[steve jamieson]

mineral deposit remover is the correct thing to use , i have used limelight and some other toilet descallers but be carefull ,test a small area first as sometimes they can just make the windows worse     
                             steve

[jeff evans]

put pure vinager on your pad and rub,cheep and effective.

Cheers Jeff

[Easyclean Windows]

if you want to get water stains off then as said mdr but if you want to get it off really quick and large areas of it use crystal clear