Rainwater Harvesting is a subject close to the heart of many who seek a way of living off the grid. A full FAQ (Frequently asked questions) on rainwater harvesting has just been released by Water Rhapsody and can be found at Rainwater Harvesting FAQ
Over recent years water costs combined with sewerage rates have 
escalated far faster than inflation. This means that it has become worth your while to install rainwater harvesting systems. You may now augment supply from the traditional sources of dams etc, and rainwater harvesting as a way to augment supply has become imperative.
You no longer need to install tanks close to your house to harvest rainwater. These tanks can now stand anywhere you like, because we get to deliver this water to wherever your tanks stand, so the rainwater tanks can stand unobtrusively at your home or commercial building. The FAQ’s explain how water is harvested, delivered by gravity to rainwater tanks, and delivered to your whole household during the rain season in a sustainable manner. Furthermore the system of harvesting rainwater is viable i.e. the system can pay for itself within a reasonable period of time.
1997 WWF Trust Award won by Water Rhapsody for the initiative shown by founder and inventor Jeremy Taylor in the creation of Water Saving systems that can save you up to 90% on your water bill.