I think the change in lifestyle from using up all the groundwater would be pretty severe.

personally i'm just going to evolve

Not developing mutations to live in a mad max style future shows lack of initiative

I have a tub in the kitchen sink to capture all dishwater, and make 4-5 trips outside to dump the water daily, into watering tubes that are six inches deep, around the dripline of each tree. Here in the SW US it is almost pointless to water at the surface, 90% or so is lost to evaporation within a day.

You can also hibernate in pokeballs when things get bad.

Foolproof plan.

Considering current shitshow reaction to having to deal with smaller issues I'm not optimistic about how that's going to play out.