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Wastewater - Contaminants and their effects

Year: 2010 Author: UNEP/GRID-Arendal
The contaminants in waste- water come from many different sources and can have cumulative and synergistic effects requiring a multi-pronged response.
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Sanitation sewage and treatment in big cities - Two study cases
Ratio of wastewater treatment
World fresh water supply
Water withdrawal and use
Population living in river basins where freshwater withdrawal exceeds 40 per cent of renewable resources
World population living in river basins with severe water stress
Water for food
Child mortality rates