>>1006440If you are below 8000 ft, you can probably swim with few problems
Above this, your swim is going to dominate the chemistry downstream, for years
Go to the leeward side of most alpine lakes and you will find a layer of foam
This came from people bathing upstream or in the lake, or people washing shit in the lake
These lakes have little turnover, so even the sunscreen and moisturizer on your skin will affect them for decades
>>1008908This guy gets it
Even the Mediterranean is being fucked up by the shit on people's skin