The largest amount of water is captured on roofs and paved areas around residential projects, and we use underground tanks to accumulate them. Rainwater is drained from the roof via a gutter through the sediment catchers; an effective filter is fitted at the inflow to the rainwater sump.

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Rainwater contains little salt, so there is no salinisation of the soil.

In addition, it does not contain chlorine. There are even plants that hate other than rainwater, such as Canadian blueberries.

By watering with rain water, the plants are simultaneously fertilized with nitrogen.