You can use rainwater for flushing toilets and watering your garden. Some urban planning regulations require the installation of rainwater tanks in new buildings.
However, it is not drinkable and its quality is not reliable enough for regular personal hygiene (bathing, showering, brushing teeth, etc.).
If you install a rainwater system in your home, it is essential that it is completely and permanently separated from the drinking water system to avoid contaminating the latter.
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