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After reading the previous article, you should be motivated to use every drop of water wisely in your home and reusing grey water where you can. But you'll still need a source of water which is a problem in some areas.
Let’s look at what it takes to harvest rainwater and the estimated cost. For a more detailed discussion download the full sustainable living guide.
The amount of water you can harvest is determined by three factors:
As a rough guide, we estimate that 1 mm of rain on 1 m² of roof = 1 litre of water
For a basic rainwater harvesting system, you will need the elements below:
If you do some of the work yourself and can get away with a basic system, it can cost as little as R6 000.
Figure 1 shows the components of a standard rainwater harvesting system.
Generally, harvested water is used as grey water to flush toilets, wash hands or for other non-potable (drinking) purposes.
In the next six of our 13-part series, we look at savvy plans to put in place to minimise load shedding from disrupting your family’s life.
Ready to invest in a power or water saving solution for your home? If you’re an SA Home Loans client, we'll help you finance it through your home loan.