Bangladesh grappling with coastal flooding, arsenic pollution and food insecurity

As the monsoon unfolds in June 2025, Bangladesh is grappling with intensifying coastal floods, rising arsenic pollution, and looming food shortages. Heavy mid-May rain and upstream spillover triggered floods across coastal districts, displacing thousands and inundating homes, farmlands, and salinized water sources.

Rising sea levels are increasingly worsening arsenic contamination in Bangladesh’s shallow tube wells. While the WHO recommends a limit of 10 µg/L, Bangladesh’s national standard remains at 50 µg/L. Recent studies show that 49% of groundwater exceeds the WHO guideline, and 35–77 million people are exposed to unsafe levels. In some coastal areas, arsenic concentrations reached over 30 times the WHO limit (311 µg/L) . Sea-level rise and saltwater intrusion are chemically mobilizing arsenic in aquifers, increasing the risk of chronic health impacts like cancer and cardiovascular disease.

Furthermore, the intersection of flood-induced crop losses and water contamination is fueling rising food insecurity. Agriculture-dependent coastal communities face declining fish yields and saline intrusion into cropland, threatening livelihoods and nutrition. With groundwater becoming less reliable and arsenic risks mounting, clean drinking water access is deteriorating, leaving millions of people exposed to foodborne diseases and malnutrition.

In conclusion, chronic arsenic exposure in Bangladesh poses a major public health crisis, leading to a wide range of serious health conditions. Long-term exposure through contaminated groundwater and food has been linked to arsenicosis, various cancers, neurological and cardiovascular diseases, diabetes, respiratory issues, kidney and reproductive disorders, and multi-organ damage. In children, arsenic exposure especially during pregnancy can result in infant mortality, stillbirth, premature birth, low birth weight, stunted growth, weakened immunity, reduced IQ, and neurodevelopmental impairments. The impacts are not only medical but also socioeconomic, with affected individuals, particularly those with arsenicosis, often facing severe financial hardship, social stigma, and diminished quality of life.

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