I've swum a few times at Chiswick with no problems. Swim in it, don't drink it. Wash your hands when you get out. Don't swim in the river after heavy rainfall. Have fun.
Also drink a can of full fat full sugar coke afterwards.
That stuff absolutely ruins any nastys you may ingest.
I've heard that but your stomach acid is fairly harsh and I can't find any studies either way and I prefer beer after a swim
@RonnieOatmilk started
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I've swum a few times at Chiswick with no problems. Swim in it, don't drink it. Wash your hands when you get out. Don't swim in the river after heavy rainfall. Have fun.