One of the easiest way to obtain water when you’re off the water supply network, is to harvest rainwater. In almost every place on Earth you have some precipitation, if not, you probably won’t be able to live there off  the grid. Water harvesting is so easy I don’t know why it isn’t used everywhere. In cities the rainwater has to be collected and discharged somehow, so IMHO it should be stored and used locally, instead of water from the supply network, to conserve that water. Rainwater harvesting is useful not when you plan to live off the grid! (more…)