Glossary and abbreviations

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Natura 2000: A network of ecological sites (natural or semi-natural) with high heritage value because of the natural habitats or exceptional flora and fauna they contain.
The Natura 2000 network includes two types sites:
- SPA (Special Protection Area) relative to the 1979 Birds Directive
- SAC (Special Area of Conservation) relative to the 1992 Habitats Directive.
Network yield: Ratio between the sum of the volume of water invoiced for industrial and household use and the volume of water for service requirements not invoiced actually released into the distribution system.
NGO: Non-Governmental Organizations. Within the UN, groups of volunteer unpaid citizens organized at the local, national or international level. They fulfill a humanitarian role, advise governments of citizens’ concerns, encourage political involvement at the community level, etc.
NHIW: Non-hazardous industrial waste
Non-hazardous industrial waste: All non-inert and non-hazardous waste generated by companies, manufacturers, retailers, craftsmen and service providers; scrap metal, non-ferrous metal, paper & board, glass, textiles, wood, plastic, etc.
NOx: NO and NO2, nitrogen monoxide and dioxide.