The management of aquifer recharge in the European legal framework

This report, which was developed within the DEMEAU project, reviews the existing EU-level and selected national-level legislation regarding managed aquifer recharge (MAR) activities. In summary, EU legislations (WFD, GWD, and UWWTD) do not sepcifically consider the requirements for MAR. However, the WFD stipulates MAR as a supplementary measure and indicates that this activity will require periodic controls and previous authorisation. In the analysed countries there is a lack of harmonisation. European directives only give brief comments for MAR systems. These directives state that degradation of groundwater quality it is not allowed and the member states have to authorize the recharge systems and verify the monitoring program. Only Spain and Switzerland regulate specifically for direct and indirect input of water, by setting the requirements in the same parameters but giving different limits. Emerging Organic Compounds (EOC) are not regulated on EU-level for MAR, but priority substances have been defined. After the review of the existing legislation, recommendations for the implementation of MAR in compliance with EU legisaltion were developed. Possible points of compliance for different MAR techniques are also discussed.

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