Drinking-water identifying priority chemicals

Identifying priority chemicals in a drinking-water supply... 

Identifying chemicals of concern to public health in drinking-water is based on the hazard to health of those chemicals and the probability of exposure. In many parts of developing countries, and in rural areas of some developed countries, water quality data are limited or nonexistent, making it difficult to determine priorities for risk management based on both criteria. In such cases, the priority for risk management must be determined on the probability of exposure alone,... 

Once priority chemicals within a particular drinking-water system have been identified, a management policy should be established and implemented to provide a framework for the prevention and reduction of these chemicals. Appropriate monitoring programmes should be established to ensure that the chemical quality of drinking-water remains within appropriate national standards. 

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