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Due to environmental pollution and urbanization, mountains, dams, embankments and roads are being destroyed, and environmental pollution is accelerating the degeneration of water quality. For this reason, people are suffering from the lack of water all around the world. Rainwater is used only when the water supply is cut off, but most cities just let it flow into rivers or seas.The only way to solve this problem is saving rainwater and recycling it. Especially, most water for cleaning landscape trees or roads is tap water, but using rainwater can reduce the use of tap water, since it doesn't require a separate handling facility.
cheonan-si, South Korea