You may think that because you are miles from civilisation that any water source would be safe to drink but this is not the case.
After obtaining shelter, water is your next priority and regardless of your current supply, you should begin immediately securing a source.
In most cases, you will have to filter and purify any surface water source you find in a wilderness environment.
Surface water sources are contaminated by animal faeces, birds, insects and animal carcases and by humans as well. It’s now essential that you know how to purify water.
Source link: https://www.ukpreppersguide.co.uk/how-to-find-water-and-filter-and-purify-or-distill-using-the-sun/ by UK Prepper at www.ukpreppersguide.co.uk