Groundwater contamination vulnerability in Tawa river catchment, India was assessed using a GIS model. The study aimed to identify areas at risk of contamination by analyzing factors like water table depth, soil type, and recharge. Results showed 34.84% of the area is at high risk due to intensive farming and recharge practices. 54.84% fell in a moderate risk zone, while 10.32% had low contamination chances. Groundwater samples confirmed higher nitrate levels in high-risk areas (20-76 ppm) compared to moderate (5-20 ppm) and low-risk zones (<5 ppm). The model proved effective for managing groundwater resources in the region.