Contaminated sites in low- and middle-income countries that pose the greatest threat to human health, sorted by land use at location.

Toxic Sites by Land Use

The Blacksmith Index (BI) ranks the severity of the site using a logarithmic scale. The higher the rank, the more severe. The BI takes into account important factors such as the scale of the pollution source, the size of the population possibly affected, and the exposure pathways.

Blacksmith Index

The main pollutant at a contaminated site.

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