With the average rainfall of South Africa being 450mm per year, it makes us the 30th driest country in the world with a global rainfall average of 870mm per year. Furthermore, with organic growth accounting to an increase in population of 15.5% over the past decade according to the latest Census and no major water storage projects was implemented over the past decade, the need for water conservation on a national level become essential.
Water conservation on a national level entails the management of fresh water as a sustainable resource, by protecting the water environment, whilst ensuring that the current and future demands are met. On a personal front, water conservation encompasses the management of your water demand and making use of natural water resources.
To decrease your water demand the first step is to conserve your grey water, which is the water used in baths, showers, hand basins and the washing machine. This is re-used, either for gardening or toilet flushing, giving you a saving of 33% of your water usage.
Decreasing the toilet flushing demand
If the grey water is re-used for gardening, the next step would be to install a conservation system to reduce the water used for toilet flushing, which has a 20% water saving potential.
By harvesting rainwater within your property, the water demand can potentially be reduced to 10% during the rainy season, resulting in a zero monetary value for your utility bill.
Re-using pool backwash water
A minimum of 500 litres can be saved per backwash and clarified water returned safely to the pool.