Heavy metal contamination in wastewater-irrigated agricultural fields poses significant environmental, agronomic, and public health risks. A multiscale method for assessing the amount and effects of heavy metal contamination in crops and soils that receive wastewater irrigation is presented in this research. The research combines laboratory analysis, field surveys, and geographical mapping to evaluate the content and distribution of heavy metals in different crops and soil profiles, including cadmium (Cd), lead (Pb), chromium (Cr), copper (Cu), zinc (Zn), and nickel (Ni). By examining the influence of irrigation practices, soil types, and proximity to pollution sources, the research provides a comprehensive understanding of contamination pathways and identifies high-risk areas. The findings underscore the importance of localized assessments, effective wastewater management, and remediation strategies to mitigate the long-term impacts of heavy metal pollution on food security, soil health, and human well-being. . The hazards of heavy metal pollution in wastewater-irrigated fields are thoroughly examined in this research, which highlights the significance of using a multiscale strategy to evaluate and resolve these issues.