Arsenic map

Probability of geogenic arsenic in groundwater exceeding the WHO guideline of 10 μg/l. This map is adapted from a global arsenic prediction map (Podgorski & Berg, 2020), which was created through machine-learning modelling using > 50,000 global arsenic measurements. This map is not a replacement for the independent assessment and monitoring of arsenic in groundwater sources Source: BGR, BGS, BRGM, EAWAG & UNESCO