On the list of survival times, water rates third (after air and shelter). You can expect to survive about 3 days without it, but that assumes you are not moving around too much and weather conditions are pleasant. If you are having to do physical work (eg gardening, hiking, running for your life) then your requirements for water increase.
When we look at water, we are not just talking about good old H2O but also other sources of water (such as different foods) that assist the body in getting all the liquid joy it needs to survive.
This section of the site looks into different ways we can safely obtain water, store it, clean it and ways we can use it to benefit ourselves and our community.