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Fluoride is one of the very few chemicals that has been shown to cause significant effects in people through drinking-water. Fluoride has beneficial effects on teeth at low concentrations in drinking-water, but excessive exposure to fluoride in drinking-water, or in combination with exposure to fluoride from other sources, can give rise to a number of adverse effects.

The purpose of this document is to provide information on household water treatment using seeds of the Moringa oleifera tree. Solutions of Moringa seeds for water treatment may be prepared from seed kernels or from the solid residue left over after oil extraction (presscake).

Image and Content Courtesy: SIWW 2009

Singapore International Water Week 2009, themed Sustainable Cities , Infrastructure and Technologies for Water, aims to help achieve long-term benefits. You will find sound professional advice and clear business direction from various market segments to help you overcome tough challenges in uncertain times at SIWW 2009!

The event's flagship programmes comprise: • Water Leaders Summit • Water Convention • Water Expo • Business Forums • Lee Kuan Yew Water Prize Access the Event Schedule online here: Singapore International Water Week 2009 - Schedule Access Advance Event Programme here: Singapore International Water Week 2009 - Advance Programme

This article published in the Journal of Ecobiology describes the technique of phytoremediation, which is increasingly being adopted wherein certain plants are used to adsorb or degrade the pollutants from soil and water.

Fluoride is a major industrial pollutant, one which has caused widespread damage to fluoride-exposed workers and downwind communities. During the Cold War, fluoride was responsible for more litigation against U.S. industry than all other air pollutants combined.

Know all about arsenic poisoning of groun

This site provides information on the causes and symptoms of diarrhoea, the prevention and treatment of dehydration following acute diarrhoeal disease and the methods to be followed for rehydration.

The site has links to the following sections:

This brief on the International Lake Environment Committee site discusses the situation of lakes in the South East Asian region in the context of the growing water crisis and the gradual degradation o

Solar Water Disinfection (SODIS) is a simple water treatment method to kill any pathogens in water that cause diarrhoea. This website provides a number of resources related to the application of this method

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This  report available on the Environmental Expert.com site highlights and discusses the practical and proven methods for the removal of arsenic from groundwater aquifiers and drinking water systems.