No, they aren't separating from the clouds, they are condensating. They are passing from gas to liquid, this means that the sky is in a very low temperature, soon they are going to fall
Why are we separating from the clouds in form of droplets?
As I said before, the droplets where ready to fall, and I am not a predicator: the tiny droplets grow and have a great weight, due to this and deepending in the atmospheric location, they can precipitate in snow, rain, hail...
Mister Water is infiltrating in the form of water (liquid) to the underground through the pores of rocks in the crust until there is a waterproof layer. In that layer, caused by the erosions and particles, the aquifer is formed as a cave.