How are some small bodies of water so crystal clear they look transparent? Isn’t debris and random pollution constantly falling into them from the surrounding environment? What keeps them so clean-looking?

Question

How are some small bodies of water so crystal clear they look transparent? Isn’t debris and random pollution constantly falling into them from the surrounding environment? What keeps them so clean-looking?

In: Earth Science

Answer 1

Generally you see clear lakes near mountains. The water running off the mountain is free from alot of pollutants, since there is little farming in the mountains. Often in mountainous streams, the bottom of the river is rocky, meaning that not much sediment (dirt, sand, etc) can be picked up to be transported to the lake. Less sediment equals more clear water.