WELL Factsheet: Arsenic in drinking water

Arsenic is a naturally occurring chemical widely distributed throughout the earth’s crust with a number of commercial uses, primarily in preservatives and alloying agents. It can be introduced into water through the dissolution of minerals and ores, and from industrial effluents and emissions.

Produced by WEDC and the London School of Hygiene and Tropical Medicine for the Department of International Development (DFID) of the UK government (now the Foreign, Commonwealth & Development Office (FCDO)), this archive collection of WELL factsheets remains relevant. It covers topics ranging from the anaerobic treatment of municipal wastewater through to water quality and safety plans.