All in all, sustaining yourself in the jungle is very important. Fortunately, there are a lot of sources of drinking water everywhere, so you will have at least that one in abundance. Never ever drink dirty water or you will get sick. If you can't find drinking water around, then take a coconut and cut it in half. Leave the two halves on the ground near your shelter, and when it's going to rain the halves will collect the rainwater, which is good for drinking. This way, you will always have drinking water around.