One of the biggest problems with the TV Show Man Vs Wild is host Bear Grylls lack of concern for making sure his water is actually drinkable. Drinking from untreated water sources can cause many different diseases including Campylobacter, cholera, amoebic dysentery, Giardia (beaver fever) and Cryptosporidia.
For your health and safety you should boil stream water for at least 1 minute or make sure it’s chemically treated before drinking it. You can also use a wilderness water filter. Treating your water can mean the difference between life and death.
Man Vs Wild Crazy Water Advice