This presentation by C Vishnupriya of Bharat Institute of Higher Education and Research, Chennai looks at an existing residential building with a rainwater harvesting system that is not adequately sized.

Her design enhances the existing storage and integrates a grey water treatment and reuse system. The storage tank is cleverly concealed in an architectural feature at the lintel level thereby eliminating the need for pumping the water.

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View the other designs presented in the competition