Artificial Recharge for Source Sustainability in the Hard Rock Terrain of Western Rajasthan, India

High Resolution Image Download MS PowerPoint Slide The decline in groundwater reserves in arid and semiarid landscapes threatens water availability and requires economical and technically viable solutions for source sustainability. This study deals with the conversion of a dried borewell at Balarwa, Jodhpur District Rajasthan, into an injection well for artificial recharge in hard rock strata. Aquifer testing through input test analysis reveals that the dried borewell aquifer has relatively high transmissivity and behavior ranging from confined to semiconfined. Considering the aquifer properties and recharge capability, a novel artificial recharge system is designed, which consists of sedimentation channels, slotted casing pipes, and gravel-based filter media, facilitating infiltration and limiting suspended material entry. Post-recharge water quality assessment shows that the artificial recharge process has a positive influence on water quality parameters, including pH, turbidity, and color. This study illustrates that dried borewells can be successfully repurposed into recharge structures, offering a cost-effective means for the sustainability of sources in hard rock regions. However, evidence also stresses the importance of long-term quality surveillance and hydrogeological modeling to ensure the sustainable application of this technique. The study aims to support the sustainable development goal SDG-6: Clean Water and Sanitation, specifically through target 6.6 and supported by target 6.5.