I used to didn't mind what kind of water we got in to swim. As kids we swam in the worst of cattle tanks etc. Now, I look a little more skeptically at a lot of that water. But, I still sure do like it!
Looking back, it amazes me how I'd jump into any type of water as a kid, LOL! One time I swam out in this lake that was full of weeds so tall they came up just below the surface, so that I was swimming through the tops of them. At some point I noticed the water getting so deep I couldn't see the bottom through the weeds, and I was about halfway out in the middle of the lake, maybe a quarter-mile from shore getting tangled in weeds in water over my head. I decided I'd better turn back then, LOL! I also remember swimming in some pretty muddy water. Didn't seem to make any difference to me as a kid! But these days I'll look at something like that and go, hmmmmm--LOL!