Transcription of Chapter 2* - Water Quality Requirements
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Chapter 2* - Water Quality Requirements
Chapter 2* - Water Quality Requirements * This Chapter was prepared by Ute S. Enderlein, Rainer E. Enderlein and W. Peter Williams Introduction Control of Water pollution has reached primary importance in developed and a number of developing countries. The prevention of pollution at source, the precautionary principle and the prior licensing of wastewater discharges by competent authorities have become key elements of successful policies for preventing, controlling and reducing inputs of hazardous substances, nutrients and other Water pollutants from point sources into aquatic ecosystems (see Chapter 1).
on the ground that scientific research has not fully proved a causal link between those substances, on the one hand, and the potential adverse impact, on the other 1 Water quality standards are discussed in Chapter 3 Sources: Adapted from Dick, 1975; CCREM, 1987; Chiaudani and Premazzi, 1988; UNECE, 1992, 1993
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