Excessive digging of new bore-wells and incessant use of existing ones has resulted in severe depletion of groundwater levels rendering many bore-wells dry.
The video below explains our single ring technique. Due to difficulty and cost of obtaining sand as a filtration method, we have developed a new method called the Twin Ring Method.
Here is a diagram of the way this is constructed. For more photos of this method please click here.
Sankalpa Rural Development Society’s direct bore-well recharge technique combines common rainwater harvesting practices with innovative practices to replenish ground-tables and aquifers with naturally filtered rainwater.
SRDS’s ingenious solution to this issue involves the excavation of a pit sized 10x10x10 feet (in most cases) around the tube-well’s casing pipe.
A 10×10 feet percolation pit is dug around the bore well – and an adjoining catchment area (pond) is excavated (this pond does not need to take up a large area)
Stone pitching is done around the walls of the percolation pit.
A 3-inch layer of sand is made at the bottom of the pit.
Holes or slits are made in the bore well casing pipe and we then cover it with mesh – to ensure nothing but water goes into the bore well.
Cement rings are placed around the bore well pipe and that area is left open. The cement rings are concreted together.
The remaining area of the pit outside the cement rings is filled with sand, stone and gravel.
Rain water from the catchment area (pond) gets transferred to the percolation pit. This then seeps in through the sand and gravel outside of the Cement rings.
This water filters up through the sand in the base of the cement rings and fills the area around the pipe casing.
And then enters into the bore well through the protective mesh and the holes thereby recharging the underlying aquifer with clean, filtered rainwater.
This renovation of ground water harvesting is useful for the following reasons:
Bore-wells are recharged using our technique have resulted into increased water-level in the bore wells. Even completely dried bore-wells can also be revived by proper management and utilization of rain water.
Reserving of naturally filtered rainwater into the groundwater tables results in a decrease in the proportion of impurities in the water. The bore-well’s water thus loses its hardness with time and toxic minerals such as fluoride are diminished.
The use of locally procured natural materials enables us to deliver the bore-well recharge service at an extremely low cost.
Once recharged a bore-well never goes dry. Year after year, underground water-tables and aquifers are replenished thus keeping your bore-well up and running.
It doesn’t matter if you’re a farmer with your bore-well on a farm-land or if your bore-well lies on the site of an industry / farm-house / educational institute or any other urban site. Our technique can be customized to meet your needs.
Apart from resolving your water-scarcity issue, our bore-well recharge technique also ensures the storage of naturally filtered rainwater in natural water-reservoirs i.e. aquifers and water-tables for use by future generations.
We must conserve and replenish the underground water storage in the aquifers for the future of our children and our children’s children. Rain water harvesting is the optimal way to do this.