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Rainwater Harvesting

With the growing concern for the environment, Rainwater Harvesting is becoming more and more popular. We have devised some FAQs to help you decide if Rainwater Harvesting could benefit you…

  1. What is Rainwater Harvesting? Rainwater harvesting is a way of saving the rainwater which would normally flow off a roof and down the drain, and using it as piped water to flush toilets and for the garden watering, yard washdown, vehicle and car washing, instead of treated drinking (potable) water.
  2. How does rainwater harvesting work? A storage tank is fitted to your stormwater drain from your roof, and falling rain enters the tank through a filter which removes leaves and other matter. The storage tank is usually buried under car or vehicle parks, a garden or under the entrance access or drive, and contains a pump which pumps the rainwater to the building where it is piped to the toilets, and to the outside taps.
  3. Is rainwater harvesting suitable for work as well as at home? Yes, in schools, hospitals, offices, commercial premises, rainwater can typically be used for toilets, vehicle washing, yard washdown and watering plant pots/gardens.
  4. How much water can a system save? Depending on your normal usage, it can save 30 to 50% of the treated drinking water from the mains in houses and up to and up to 80% of the treated drinking water in a business or commercial building.
  5. How much would this save on water bills? Depending on your normal usage, it can save 30 to 50% for the domestic user and 80% for the commercial user of the treated drinking water from the mains. Having metered water is the best way of appreciating the difference.
  6. How much rainwater does a system collect? This depends on the area and angle of your roof, and your rainfall. Averages of 100,000 litres per household are commonly quoted, much more for large roofed commercial buildings.
  7. What can you use the water for? Filtered, untreated rainwater should only be used for non- drinking or bathing purposes: toilet flushing, gardens and vehicle or yard washdowns.

 

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