An urgent alternative watershed management strategy is needed
The world has vast natural reservoirs of geological arsenic. The ubiquitous nature of this element means that in some countries arsenic contaminates drinking water, enters the food chain and imposes significant human health risks. Globally, up to 100 million people are at risk of exposure to excessive levels of naturally occurring arsenic in well water or groundwater.1 The countries where arsenic levels in drinking water supplies exceed acceptable levels include Argentina, Bangladesh, Bolivia, Chile, China, Hungary, India, Mexico, Nepal, Peru, Romania, Taiwan, the United States and Vietnam.1,2
- 1. Ng JC, Wang J, Shraim A. A global health problem caused by arsenic from natural sources. Chemosphere 2003; 52: 1353-1359.
- 2. Ng JC. Environmental contamination of arsenic and its toxicological impact on humans. Environ Chem 2005; 2: 146-160.
- 3. British Geological Survey. The groundwater arsenic problem in Bangladesh — background to phase 2. Available at: http://www.bgs.ac.uk/arsenic/bangladesh/home.html (accessed Oct 2005).
- 4. Dhar RK, Biswas BK, Samanta G, et al. Groundwater arsenic calamity in Bangladesh. Curr Sci 1997; 73: 48-59.
- 5. Smith AH, Lingas EO, Rahman M. Contamination of drinking-water by arsenic in Bangladesh: a public health emergency. Bull World Health Organ 2000; 78: 1093-1103.
- 6. International Agency for Research on Cancer. Some drinking-water disinfectants and contaminants, including arsenic. Lyon: IARC, 2004. (WHO IARC Monograph 84.)
- 7. International Programme on Chemical Safety. Environmental health cri-teria 224: arsenic and arsenic compounds. 2nd ed. Geneva: WHO, 2001.
- 8. World Health Organization. Water sanitation and health. Guidelines for drinking-water quality. 3rd ed. Available at: http://www.who.int/water_sanitation_health/dwq/gdwq3/en/index.html (accessed Oct 2005).
- 9. The National Health and Medical Research Council, Agricultural and Resource Management Council of Australia and New Zealand. Australian drinking water guidelines — National Water Quality Management Strategy. Canberra: NHMRC/ARMCANZ, 1996 (amended 2001). Available at: http://www.mincos.gov.au/pdf/nwqms/aust_drinking_water_guidelines.pdf (accessed Oct 2005).
- 10. Morales KH, Ryan L, Kuo TL, et al. Risk of internal cancers from arsenic in drinking water. Environ Health Perspect 2000; 108: 655-661.
- 11. Biswas BK, Dhar RK, Samanta G, et al. Detailed study report of Samta, one of the arsenic-affected villages of Jessore district, Bangladesh. Curr Sci 1998; 74: 134-145.
- 12. Chen Y, Ahsan H. Cancer burden from arsenic in drinking water in Bangladesh. Am J Public Health 2004; 94: 741-744.
- 13. World Bank. World Development Indicators Database. Available at: http://www.worldbank.org/data/databytopic/GDP.pdf (accessed Oct 2005).
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