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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.

This depends on a few things. No, not without proper treatment. For homeowners in Midrand, 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.

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.

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

Here's a practical breakdown. A basic garden system can often be done in a single day. A comprehensive, whole-house system might take several days to a week. This is worth noting for Midrand homeowners.