Groundwater quality assessment plays a critical role in ensuring the sustainability of water resources, particularly in arid regions like the Bikaner district of Rajasthan. This study focuses on the analysis of groundwater quality from 18 villages, examining a comprehensive range of parameters to evaluate its suitability for drinking and agricultural purposes. The parameters analyzed include major cations (Ca²?, Mg²?, Na?, K?), anions (Cl?, SO?²?, NO??, F?, CO?²?, HCO??), heavy metals (Cr, Cu, Mn, Pb, U, Zn, As), along with key indicators such as pH, electrical conductivity (EC), total dissolved solids (TDS), and total hardness (TH). The results revealed substantial spatial variation in water quality, with several locations exceeding permissible limits for TDS, TH, and heavy metals as per established standards. Elevated levels of TDS and TH were particularly evident in villages like Lachhasar and Jaitasar, potentially indicating the influence of geological formations and anthropogenic activities. Similarly, heavy metal concentrations, including Cr, Mn, Pb, and U, were found to surpass safe thresholds in some areas, raising concerns over potential health risks. The pH values across the study sites ranged from slightly acidic to mildly alkaline, while EC values indicated variations in salinity levels, further reflecting water quality disparities. This study underscores the critical need for regular groundwater monitoring and the implementation of sustainable management practices to mitigate contamination risks and ensure the availability of safe water resources. The findings not only provide a detailed understanding of groundwater quality in the Bikaner district but also emphasize the urgency of integrating scientific research with policy measures to safeguard water security in arid regions.