Heavy metal contamination refers to the presence of toxic metals, such as lead, mercury, cadmium, and arsenic, in the environment. These metals can accumulate in soil, water, and living organisms, posing risks to human health and ecosystems. Sources of contamination often include industrial activities, mining, and improper waste disposal. Exposure to heavy metals can lead to serious health issues, including neurological damage, kidney problems, and developmental disorders. Contaminated sites may require remediation efforts to reduce the levels of these harmful substances and protect public health and the environment. Monitoring and regulation are essential to prevent further contamination.