Who has done the pioneering work in the field of rain water harvesting?

Pioneering work in rainwater harvesting is often attributed to various cultures and individuals throughout history. However, modern advancements can be significantly credited to figures like Dr. S. S. S. K. Chandrasekaran in India, who promoted its use for sustainable water management. Additionally, organizations like the Rainwater Harvesting Association have helped to popularize and implement rainwater harvesting techniques globally. Various local and indigenous practices also play a crucial role in the development of this field.