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Rainwater harvesting

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A Kandua professional can calculate your roof's exact potential. You can collect approximately 1 litre of water for every 1 millimetre of rain that falls on 1 square metre of your roof.

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. No, not without proper treatment.

This is one of the most common questions we get. A professionally installed system will include a backup connection to the municipal supply. An automatic or manual valve ensures you can switch to the municipal grid when your tank is low. This is worth noting for Pretoria homeowners.

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.