Water in fuel

[06KR350]

I always wondered how any significant amount of water might get into my fuel if I only filled up with petrol. After yesterday I can see how it might happen. I went to the local Sam's Club Gas and when I pulled the diesel line off the pump I noticed ICE stuck in the tip of it. I started banging the nozzle on the ground to try and break it free, but that didn't work. I finally decided to just squirt some fuel out onto the ground, and out comes this cylinder-shaped piece of ice. It looked like a roll of quarters in size. The attendant came out and yelled at me - I replied "I'm not putting that $hit in my truck, and what's it to you anyway? I'm paying for it!"

So now my question is - how did that ice/water get there? Is there normally water present in any significant amount in petrol diesel?

[Clay Henry]

That sounds like alot of water...must have been from precipitaion unless someone put it there.
There wouldn't be that much from condensation nor from in the fuel.