Dhaka, where the groundwater levels are dropping two to three metres every year (Wiki)
In rural areas, more than 97% of the population relies on groundwater for its drinking water supply (Wiki)
Causes:
About 30% of the served population of the Dhaka Water Supply and Sewerage Authority (DWASA) is covered by a sewerage system, the only one in the entire country. (Wiki)
bout 1% of total water resources, is being withdrawn for human use. (Wiki)
In Dhaka, 82% of the water supply is extracted from groundwater that is free of arsenic, while three surface water treatment plants provide the remaining 18% (Wiki)