Topper, one of the issues with water in the fuel is that microbes, little bugs called cladosporium resinae , can use the oxygen in the water in conjunction with the carbon in the jet-a to live happy little lives in the fuel system procreating willy-nilly resulting in a sludge that can, in time, block filters etc. If there is no water, then there's no clad resinae.
If the water is not held in suspension it will sit at the bottom and is easy to see,most of the time it is in suspension and the only real way to check properly is with a water test kit though.
That is all for now....you can take a fifteen minute break.