1. Chemical and indicator parameters

Directive (EU) 2020/2184 of the European Parliament and of the Council of 16 December 2020 on the quality of water intended for human consumption (recast) (Text with EEA relevance) · European Union

For the parameters set out in Table 1 of this Annex, the method of analysis used shall, as a minimum, be capable of measuring concentrations equal to the parametric value with a limit of quantification, as defined in point (2) of Article 2 of Commission Directive 2009/90/EC Commission Directive 2009/90/EC of 31 July 2009 laying down, pursuant to Directive 2000/60/EC of the European Parliament and of the Council, technical specifications for chemical analysis and monitoring of water status (OJ L 201, 1.8.2009, p. 36). , of 30 % or less of the relevant parametric value and an uncertainty of measurement as specified in Table 1 of this Annex. The result shall be expressed using at least the same number of significant figures as for the parametric value referred to in Parts B and C of Annex I to this Directive. The uncertainty of measurement laid down in Table 1 shall not be used as an additional tolerance to the parametric values set out in Annex I. Table 1. Minimum performance characteristic ‘Uncertainty of measurement’ Parameters Uncertainty of measurement (See Note 1) % of the parametric value (except for pH) Notes Aluminium 25 Ammonium 40 Acrylamide 30 Antimony 40 Arsenic 30 Benzo(a)pyrene 50 See Note 2 Benzene 40 Bisphenol A 50 Boron 25 Bromate 40 Cadmium 25 Chloride 15 Chlorate 40 Chlorite 40 Chromium 30 Copper 25 Cyanide 30 See Note 3 1,2-dichloroethane 40 Epichlorohydrin 30 Fluoride 20 HAAs 50 Hydrogen ion concentration pH 0,2 See Note 4 Iron 30 Lead 30 Manganese 30 Mercury 30 Microcystin-LR 30 Nickel 25 Nitrate 15 Nitrite 20 Oxidisability 50 See Note 5 Pesticides 30 See Note 6 PFAS 50 Polycyclic aromatic hydrocarbons 40 See Note 7 Selenium 40 Sodium 15 Sulphate 15 Tetrachloroethene 40 See Note 8 Trichloroethene 40 See Note 8 Trihalomethanes – total 40 See Note 7 Total organic carbon (TOC) 30 See Note 9 Turbidity 30 See Note 10 Uranium 30 Vinyl chloride 50

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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.