Recharge Well – Simple and Clever design

Recharge Well – Simple and Clever design

Civil engineers at the Sehgal Foundation, a 16-year-old Indian nonprofit organization, have created a well design that does a better job of collecting fresh rainwater than could be gathered from the wells used in rural areas.

The Sehgal team sought out to redesign recharge wells by stretching them out in both directions like putty. The section above ground is lengthened, while the part below is extended deeper into the Earth, increasing the hydrostatic pressure within the well. When the pressurized water is collected, it pierces through the saline groundwater underneath, forming a “bubble” of freshwater within. The pressure exerted around the salty water keeps the pocket of drinkable water intact.

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