Abstract Groundwater 18O/16O, 2H/1H, 13C/12C, 3H, and 14C data can help quantify
molecular movements and chemical reactions governing groundwater recharge, quality …

Over the past few decades, groundwater wells installed in rural areas throughout the major
river basins draining the Himalayas have become the main source of drinking water for tens …

The elevated concentration of arsenic (As) in the groundwaters of many countries worldwide
has received much attention during recent decades. This article presents an overview of the …

Tens of millions of people in south and southeast Asia routinely consume ground water that
has unsafe arsenic levels,. Arsenic is naturally derived from eroded Himalayan sediments …

Concern has been raised by Bangladeshi and international scientists about elevated levels
of arsenic in Bengali food, particularly in rice grain. This is the first inclusive food market …

The origin of dissolved arsenic in the Ganges Delta has puzzled researchers ever since the
report of widespread arsenic poisoning two decades ago. Today, microbially mediated …

Groundwater levels in shallow aquifers underlying Asian mega-deltas are characterized by
strong seasonal variations associated with monsoon rainfall. To resolve trend and seasonal …

Quantitative evaluations of the impact of groundwater abstraction on recharge are rare. Over
a period (1975–2007) during which groundwater abstraction increased dramatically in the …

Across West Bengal and Bangladesh, concentrations of Cl in much groundwater exceed the
natural, upper limit of 10mg/L. The Cl/Br mass ratios in groundwaters range up to 2500 and …

Confining clay layers typically protect groundwater aquifers against downward intrusion of
contaminants. In the context of groundwater arsenic in Bangladesh, we challenge this notion …