Assessment of Soil and Groundwater Contamination Around an MSW Disposal Site in Jaipur, India

Despite leachate contamination being common around dumpsites, studies integrating spatial variation, soil‐depth profiles, groundwater quality, and associated environmental risks remain limited. This study assessed leachate, soil, and groundwater quality in the vicinity of a municipal solid‐waste dumpsite in Jaipur, India, using spatial sampling structured by distance, direction, and soil depth. Leachate was alkaline and reducing, with pH of 8.2–8.8, electrical conductivity (EC) of 25–29 mS cm −1 , total dissolved solids (TDS) of 12,460–16,000 mg L −1 , and detectable Cd, Cr, Cu, Pb, Ni, and Zn. Maximum soil EC and TDS values were higher at 0.3 m, whereas selected water‐extractable ions showed variable depth profiles. Groundwater pH ranged from 6.5 to 8.2, EC from 0.4 to 3.6 mS cm −1 , and TDS from 200 to 1770 mg L −1 . Borewells east of the study dumpsite showed the highest EC, TDS, and chloride concentrations. Spearman analysis showed depth‐specific soil associations and groundwater EC‐TDS‐chloride‐calcium co‐variation. Ecological‐risk assessment identified Cd as the principal soil‐risk driver, with moderate to considerable integrated ecological risk across the investigated soil profile. Soil non‐carcinogenic hazard indices were below 1 for adults and children, whereas groundwater‐ingestion hazard indices exceeded 1 at assessed locations, particularly for children, and were dominated by Cd. The absence of a consistent concentration decline with distance or depth indicates heterogeneous spatial and vertical variation. The single‐campaign spatial design did not confirm source attribution or transport pathways. Leachate treatment, runoff control, protection of groundwater‐use areas, and seasonal monitoring are recommended.