5. Assessment of geochemical background and groundwater age
Groundwater is a complex, three-dimensional body of water in which recharge phenomena, flow conditions and interactions with the solid environment (rocks, soils) can be highly localized. This means that, within a given groundwater body, the chemical, radiochemical and biochemical characteristics of the water vary both spatially (horizontally and vertically) and temporally. In comparison with natural conditions, these characteristics can be modified by anthropogenic pressures. Thus, the water quality of a given body of water cannot be represented by a single set of analytical values, and the degree of human influence cannot be established by simple comparison with a reference list
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Assessment of geochemical background and groundwater age
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Bibliography
Standards and norms
- Portant sur les dispositions générales pour la compétence des laboratoires d'essais et d'étalonnage - EN ISO/IEC-17025 -
Regulations
Directive 2000/60/EC establishing a framework for Community action in the field of water policy, OJ of the European Communities, L 327 of 22.12.2000, p. 1.
Directive 2006/118/EC on the protection of groundwater against pollution and deterioration, JO des Communautés Européennes, L 372 du 12.12.2006, p. 19
Directory
Organizations – Federations – Associations (non-exhaustive list)
International Groundwater Resources Assessment Centre https://www.un-igrac.org/fr
International Association of Hydrogeologists https://iah.org/
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