People need water to survive - I've just read that on wikipedia and I must say that I'm totally shocked. I was like whoah mate, you sure? So the thing is that this topic is hot and I'm totally the greatest fan of it and we can add it to the game you know to make it more pro. People will be like 'dude, this game has water in it?' 'holy smoke, let's make some accounts man!'. Search your feelings, you know it to be true. So my idea is to make characters thirsty from time to time depending on the ENDURANCE. Lack of water will cause some minuses to your primary attributes. After some time you will start seeing double and your fighting capabilities will be reduced. After few days you will die. After the reborn your thirst will be like 50% or lower so no leaving your stuff in tent and just dieing like with radiation. Everyone will have his or hers own v13 bottle, in future it won't be v13 because of this 'we're not vault dwellers thing' you guys like to say all the time. This item will be unlootable and undroppable or you will just always get one after resurrecting - or it'll be very easy to obtain like using outdoor on junk barrel - so you dont get it all the time but you can get it.
Now the water itself. In cities there will be wells where you can get some if you pay. Traders would have some extra bottles at very high prices. If you're a citizen or something you will get discount or even free charge every day/few days.
You will be able to find some springs and streams and oasis kind of places on the desert so you can resupply, but they will be very very rare. Once you find one place you can mark it on your map-boy totally not pip-boy thingy. But those will dry up after few times of use so no guild pumping till the last drop and making money out of it. For solo purposes it will be great for few maybe more times.
Why? You ask. "It will make the game more complicated and not so 'ima rip and tear this city with my minigun'. I'm gonna have to search the desert or even PAY!" Harsh wasteland mate, harsh wasteland. So stop bawing and whining pretty boys and care bears, if the game is too difficult for a 12 years old, then stop playing it.
Same thing goes with food, but that's a different kind of story so someone write it for me. I'm going to drink my delicious water now. Bye guys :3