8.

The Commission shall adopt implementing acts to establish and update a watch list addressing substances or compounds of concern to the public or the scientific community on health grounds (‘the watch list’), such as pharmaceuticals, endocrine-disrupting compounds and microplastics. Substances and compounds shall be added to the watch list where they are likely to be present in water intended for human consumption and could pose a potential risk to human health. To that end, the Commission shall make use, in particular, of scientific research of the WHO. The addition of any new substance or compound shall be duly justified under Articles 1 and 4. Beta-estradiol and Nonylphenol shall be included in the first watch list in view of their endocrine-disrupting properties and the risk they pose to human health. The first watch list shall be established by 12 January 2022. The watch list shall indicate a guidance value for each substance or compound and where necessary a possible method of analysis that does not entail excessive costs. Member States shall put in place monitoring requirements with regard to the potential presence of the substances or compounds which are included in the watch list, at relevant points of the supply chain for water intended for human consumption. For this purpose, Member States may take into account the information collected under Article 8(1), (2) and (3) of this Directive and may use the monitoring data collected in accordance with Directives 2000/60/EC and 2008/105/EC or other relevant Union legislation, in order to avoid overlapping of monitoring requirements. The monitoring results shall be included in the data sets, set up in accordance with point (b) of Article 18(1), together with the results of the monitoring performed under point (c) of the first subparagraph of Article 8(2). Where a substance or compound included in the watch list is detected, under Article 8(2) or under the fifth subparagraph of this paragraph, in concentrations exceeding the guidance values set out in the watch list, Member States shall ensure that the following measures are considered and that those measures considered relevant are taken: preventive measures, mitigation measures or appropriate monitoring in the catchment areas for abstraction points or in raw water as set out in points (a), (b) and (c) of the first subparagraph of Article 8(4); requiring water suppliers to carry out monitoring of those substances or compounds, in accordance with point (a) of the second subparagraph of Article 8(5); requiring water suppliers to check whether treatment is adequate to reach the guidance value and, where necessary, to optimise the treatment; and remedial actions in accordance with Article 14(6) where Member States consider it necessary to protect human health. The implementing acts provided for in this paragraph shall be adopted in accordance with the examination procedure referred to in Article 22.

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Source: EUR-Lex (Cellar) · retrieved 2026-10-28 · Text as adopted (Official Journal); later amendments are not incorporated in this text.