Groundwater Contamination Threatens Global Health and Infrastructure

Cities and countries worldwide rely heavily on groundwater for their daily needs, with 80% of the largest cities in the Middle East, South Asia, and Central Asia drawing on this resource for drinking, irrigation, and industrial uses. However, the increasing threat of climate change poses significant risks to groundwater quality, with research highlighting the alarming presence of arsenic contamination in groundwater sources.

Key Takeaways:

• Groundwater contamination with arsenic is a significant threat to global health, with detection of cancer, heart disease, hypertension, and nervous system problems linked to continuous consumption of contaminated water.
• The lack of awareness among people and inadequate water management systems are primary reasons for groundwater contamination in many parts of South Asian countries.
• Advanced satellite images with machine learning algorithms, support vector machines, and artificial neural networks can efficiently detect arsenic in groundwater, while treatment techniques such as adsorption, membrane filtration, electrocoagulation, and ion-exchange processes are effective methods for removing arsenic.
• Groundwater contamination affects 11 coastal provinces in Bangladesh, 9 provinces in Vietnam, 3 provinces in Cambodia, and 2 provinces in Thailand, making it a pressing issue in coastal regions.
• The Saveetha School of Engineering's researchers emphasized the need for policymakers and nongovernmental organizations to implement remedial measures and conduct awareness programs in rural and semiarid zones.

Statistics:

• 50% of the world's largest countries and cities depend on groundwater for their daily needs.
• 80% of the largest cities in the Middle East, South Asia, and Central Asia rely on groundwater for drinking, irrigation, and industrial uses.
• 11 coastal provinces in Bangladesh, 9 provinces in Vietnam, 3 provinces in Cambodia, and 2 provinces in Thailand have been affected by groundwater contamination.
• Arsenic contamination has serious health impacts, including the detection of cancer (skin, lungs, kidneys, and bladder), heart disease, hypertension, increased blood pressure, and nervous system problems.

Sources:

• Environmental Geochemistry and Health (2025;47(12):520).
• Springer (www.springer.com; Environmental Geochemistry and Health - www.springerlink.com/content/0269-4042/).
• Saveetha School of Engineering (Saveetha Institute of Medical and Technical Sciences, Chennai, 602105, India).
• Sundarayamini Kannan, Balamurugan Paneerselvam, Vidhyalakshmi Sivakumar, Maciej Thomas, Arun Chandra Sekara Bharathy, Umesh Chandra Dumka, and Johnbosco C. Egbueri (co-authors of the research).