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Rainwater harvesting

needs

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. Your installer or technician will confirm the details based on your setup.

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.

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. It's always worth getting a professional assessment for your specific needs.

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, and this is especially relevant for Durbanville residents.