Clear liquid leaking from my car

I noticed that when I start my car and leave where ever I’m at, that there’s a huge puddle where I had just parked. I parked my car on my driveway, I waited a little until it leaked and took a paper towel and the liquid was completely clear on the paper towel. However, it did stain a black pavement a few hours later. Could it still be water or something else? My car has not overheated or had any foul smells. I got concerned when I saw that it stained the black pavement.