Every property requires water and there are many ways to obtain it.
Well water is the traditional way. Property owners who are dedicated to sustainable living often prefer to use rain water collection.
This rain water collection company has a handy rain water calculator: http://www.oregonrainharvesting.com/rainwatercalculator.html
Rainwater collection system example from Clemson Univ.:
A good guide on rainwater harvesting: http://www.grownyc.org/files/osg/RWH.how.to.pdf
Traditional well drilling on one of our properties:
Water well covered by a cap:
A solar well on one property:
;)
