clear water doesn't necessarily mean clean water. Turbidity, which is how cloudy water is, is on a different axis from pollution, toxicity, and mineral content

clear water doesn't necessarily mean clean water. Turbidity, which is how cloudy water is, is on a different axis from pollution, toxicity, and mineral content of water. There are heavily stained lakes in Florida with a lot of silt mixed up that you can't see further than a couple feet in that would be fairly safe to drink out of. Mono Lake https://en.wikipedia.org/wiki/Mono_Lake https://en.wikipedia.org/wiki/Mono_Lake, by contrast is very clear, but it's a soda lake and most normal aquatic life can't live there.