Many of the world's megacities depend on groundwater from geologically complex aquifers
that are over-exploited and threatened by contamination. Here, using the example of Dhaka …

Arsenic (As) is a well-known potentially toxic metalloid, which naturally occurs in soils,
sediments, and aquatic environments. Arsenic has no essential role for living organisms. Its …

Summary Sandy aquifers deposited> 12,000 years ago, some as shallow as 30 m, have
provided a reliable supply of low-arsenic (As) drinking water in rural Bangladesh. This study …

Strontium isotopic compositions and major ion chemistry were used to delineate flow paths
in an arsenic affected groundwater flow system in the Datong basin, China. Total of 28 …

People living in the Great Rift Valley in East Africa suffer from fluorosis resulting from their
consumption of groundwater. This paper shows that geogenic fluoride contamination in a …

Elevated arsenic in groundwater affects some 100 million people in South Asia, yet
mitigation efforts are hindered by persistent uncertainty about the proximal source of arsenic …

Schwertmannite-mediated removal of arsenic from contaminated water has attracted
increasing attention. However, schwertmannite chemical synthesis behavior under different …

Groundwater is a critical resource, yet its detailed assessment in mountainous regions is
challenged by varying topography, complex hydrogeological characteristics and limited …

Abstract Shallow (< 30 m) reducing groundwater commonly contains abundant dissolved
arsenic (As) in Bangladesh. We hypothesize that dissolved As in iron (Fe)-rich groundwater …

The arsenic concentration in groundwater varies significantly with time and space in
groundwater‐surface water exchange zones. Various processes have been identified that …