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Rainwater harvesting

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This is one of the most common questions we get. You can collect approximately 1 litre of water for every 1 millimetre of rain that falls on 1 square metre of your roof. A Kandua professional can calculate your roof's exact potential in the Bryanston area.

No, not without proper treatment. For potable use (drinking), the water must pass through a multi-stage filtration process, including sediment filters, carbon filters, and a UV sterilisation unit to eliminate pathogens. It's always worth getting a professional assessment for your specific needs.

An automatic or manual valve ensures you can switch to the municipal grid when your tank is low. A professionally installed system will include a backup connection to the municipal supply.

Every 2 to 5 years, if you have good pre-filtration. Signs it needs cleaning include discoloured water, a foul odour, or a significant build-up of sediment.

A comprehensive, whole-house system might take several days to a week. A basic garden system can often be done in a single day.