The basic principle of PAH is to channel rainwater that falls on the roof surface through gutters to be collected into a reservoir tank. Then the overflow of water that comes out of the full reservoir tank is channeled into an infiltration well. The culture of making PAH and SURES has been widely practiced in many countries. Technologically, PAH and SURES are not difficult technologies, the materials and construction can be done by the community itself. If the culture of harvesting rainwater and absorbing overflow water into the ground is socialized, then a number of benefits will be obtained, including: cheap clean water sources, increasing the amount of groundwater reserves and reducing runoff that can prevent an area from puddles and flooding.
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