A study by GIS Expert Jahanzaib Sohail Rana studies arsenic concentration in drinking water using GIS in Lahore, Pakistan.
Arsenic, a poisonous substancereleased both from certain human activities and naturally from the Earth’s crust is mainly exposed to humans through food and water, particularly in certain areas where the groundwater is in contact with arsenic-containing minerals. A vast concentration of various quality parameters occurs in groundwater at different places and the World Health Organization (WHO) guidelines are often exceeded.
During the years 2000 to 2004, a survey conducted by the Punjab Environment Protection Department and UNICEF shows high concentration of arsenic in drinking water samples collected from various sites in Lahore. Through mapping arsenic levels, the project shows the arsenic surface of the entire region on the basis of sample points and shows regions in Lahore where arsenic exceeds the permissible World Health Organization’s limit and where it is in permissible limit.
For more information on the study, click here.
Sachiye Day, VERTICES intern