Can ultraviolet rays go through water?

The ultraviolet light spectrum extends from 10 nm to 400 nm, and the absorption varies dramatically within this range. read more

Yes, they do penetrate water. Some of the UV is reflected from the surface (about 30% I think), so just under the surface, there is about 70% as much UV intensity. As you go deeper, the rays get scattered, just as water can scatter normal light, and it gets darker the deeper you go. read more

Best Answer: Yes, UV rays go through water, and through windows, and through cloud cover. 80% of the sun's damaging rays are still making it through cloud cover. Yes, you would get tan swimming in the pool. read more