Definition:
Degrés spécifiques de qualité souhaités pour des utilisations de l’eau bien définies, dont la boisson, la récréation, l’exploitation agricole, la production halieutique, la propagation d’autres organismes aquatiques vivants, l’agriculture et l’industrie.
Source:
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Food and Agriculture Organization of the United Nations, AQUASTAT Web Site
United Nations, Department for Economic and Social Information and Policy Analysis, 1997, Glossary of Environmental Statistics, Studies and Methods, Series F, no 67, New York