Two quick things:

If you can't put in a well for some reason, there's a good chance you can put in a dew collector (fog fence). It's a little known method of collecting water from the air based upon dew point.
See: Thread: If the drought persists and you must find water, make a dew collector

I posted this in another topic. It's a study of supply chain disruptions in the event of an economic collapse of the EURO. I was surprised that someone else was thinking along the same lines as myself. They also believe such an event would spread disruptions globally.
See:
[link to www.feasta.org]
I urge you to read that report carefully, for any supply chain disruptions will probably be the cause of the initial chaos.