{
  "url": "https://openlegislation.uk/eu-directive-2015-1787/annex-II",
  "json_url": "https://openlegislation.uk/eu-directive-2015-1787/annex-II.json",
  "legislation": "eudr/2015/1787",
  "legislation_title": "Commission Directive (EU) 2015/1787 of 6 October 2015 amending Annexes II and III to Council Directive 98/83/EC on the quality of water intended for human consumption",
  "legislation_url": "https://openlegislation.uk/eu-directive-2015-1787",
  "path": "annex/II",
  "kind": "annex",
  "number": "II",
  "heading": null,
  "text": "Annex III to Directive 98/83/EC is amended as follows:\n(1) the introductory paragraph is replaced by the following:\n‘Member States shall ensure that the methods of analysis used for the purposes of monitoring and demonstrating compliance with this Directive are validated and documented in accordance with EN ISO/IEC 17025 or other equivalent standards accepted at international level. Member States shall ensure that laboratories or parties contracted by laboratories apply quality management system practices in accordance with EN ISO/IEC 17025 or other equivalent standards accepted at international level.\nIn the absence of an analytical method meeting the minimum performance criteria set out in Part B, Member States shall ensure that monitoring is carried out using best available techniques not entailing excessive costs.’;\n(2) point 1 is amended as follows:\n(a) the heading of point 1 is replaced by the following:\n‘PART A\nMicrobiological parameters for which methods of analysis are specified ’\n(b) the third to the ninth paragraphs, including Note 1, are replaced by the following:\n‘The methods for microbiological parameters are:\n(a) Escherichia coli (E. coli) and coliform bacteria (EN ISO 9308-1 or EN ISO 9308-2)\n(b) Enterococci (EN ISO 7899-2)\n(c) Pseudomonas aeruginosa (EN ISO 16266)\n(d) enumeration of culturable microorganisms — colony count 22 °C (EN ISO 6222)\n(e) enumeration of culturable microorganisms — colony count 36 °C (EN ISO 6222)\n(f) Clostridium perfringens including spores (EN ISO 14189)’;\n(3) point 2 is amended as follows:\n(a) the heading of point 2 is replaced by the following:\n‘PART B\nChemical and indicator parameters for which performance characteristics are specified ’\n(b) point 2.1 is replaced by the following:\n‘1.\nChemical and indicator parameters\nFor the parameters set out in Table 1, the specified performance characteristics are that the method of analysis used must, as a minimum, be capable of measuring concentrations equal to the parametric value with a limit of quantification, as defined in Article 2(2) of Commission Directive 2009/90/EC, of 30 % or less of the relevant parametric value and an uncertainty of measurement as specified in Table 1. The result shall be expressed using at least the same number of significant figures as for the parametric value considered in Parts B and C of Annex I.\nUntil 31 December 2019 Member States may allow for the use of “trueness”, “precision” and “limit of detection” as specified in Table 2, as an alternative set of performance characteristics to “limit of quantification” and “uncertainty of measurement” as specified respectively in the first paragraph and Table 1.\nThe 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.\nTable 1\nMinimum performance characteristic “Uncertainty of measurement”\nAcrylamide, epichlorohydrin and vinyl chloride to be controlled by product specification.\nParameters\nUncertainty of measurement(See Note 1)% of the parametric value (except for pH)\nNotes\nAluminium\n25\nAmmonium\n40\nAntimony\n40\nArsenic\n30\nBenzo(a)pyrene\n50\nSee Note 5\nBenzene\n40\nBoron\n25\nBromate\n40\nCadmium\n25\nChloride\n15\nChromium\n30\nConductivity\n20\nCopper\n25\nCyanide\n30\nSee Note 6\n1,2-dichloroethane\n40\nFluoride\n20\nHydrogen ion concentration pH (expressed in pH units)\n0,2\nSee Note 7\nIron\n30\nLead\n25\nManganese\n30\nMercury\n30\nNickel\n25\nNitrate\n15\nNitrite\n20\nOxidisability\n50\nSee Note 8\nPesticides\n30\nSee Note 9\nPolycyclic aromatic hydrocarbons\n50\nSee Note 10\nSelenium\n40\nSodium\n15\nSulphate\n15\nTetrachloroethene\n30\nSee Note 11\nTrichloroethene\n40\nSee Note 11\nTrihalomethanes — total\n40\nSee Note 10\nTotal organic carbon (TOC)\n30\nSee Note 12\nTurbidity\n30\nSee Note 13\nTable 2\nMinimum performance characteristics “Trueness”, “precision” and “limit of detection” — may be used until 31 December 2019\nAcrylamide, epichlorohydrin and vinyl chloride to be controlled by product specification.\nParameters\nTrueness(See Note 2)% of the parametric value (except for pH)\nPrecision(See Note 3)% of the parametric value (except for pH)\nLimit of detection(See Note 4)% of the parametric value (except for pH)\nNotes\nAluminium\n10\n10\n10\nAmmonium\n10\n10\n10\nAntimony\n25\n25\n25\nArsenic\n10\n10\n10\nBenzo(a)pyrene\n25\n25\n25\nBenzene\n25\n25\n25\nBoron\n10\n10\n10\nBromate\n25\n25\n25\nCadmium\n10\n10\n10\nChloride\n10\n10\n10\nChromium\n10\n10\n10\nConductivity\n10\n10\n10\nCopper\n10\n10\n10\nCyanide\n10\n10\n10\nSee Note 6\n1,2-dichloroethane\n25\n25\n10\nFluoride\n10\n10\n10\nHydrogen ion concentration pH (expressed in pH units)\n0,2\n0,2\nSee Note 7\nIron\n10\n10\n10\nLead\n10\n10\n10\nManganese\n10\n10\n10\nMercury\n20\n10\n20\nNickel\n10\n10\n10\nNitrate\n10\n10\n10\nNitrite\n10\n10\n10\nOxidisability\n25\n25\n10\nSee Note 8\nPesticides\n25\n25\n25\nSee Note 9\nPolycyclic aromatic hydrocarbons\n25\n25\n25\nSee Note 10\nSelenium\n10\n10\n10\nSodium\n10\n10\n10\nSulphate\n10\n10\n10\nTetrachloroethene\n25\n25\n10\nSee Note 11\nTrichloroethene\n25\n25\n10\nSee Note 11\nTrihalomethanes — total\n25\n25\n10\nSee Note 10\nTurbidity\n25\n25\n25\n’\n(c) point 2.2 is replaced by the following:\n‘2.\nNotes to Tables 1 and 2\nNote 1\nUncertainty of measurement is a non-negative parameter characterising the dispersion of the quantity values being attributed to a measurand, based on the information used. The performance criterion for measurement uncertainty (k = 2) is the percentage of the parametric value stated in the table or better. Measurement uncertainty shall be estimated at the level of the parametric value, unless otherwise specified.\nNote 2\nTrueness is a measure of systematic error, i.e. the difference between the mean value of the large number of repeated measurements and the true value. Further specifications are those set out in ISO 5725.\nNote 3\nPrecision is a measure of random error and is usually expressed as the standard deviation (within and between batches) of the spread of results from the mean. Acceptable precision is twice the relative standard deviation. This term is further specified in ISO 5725.\nNote 4\nLimit of detection is either:\nthree times the standard deviation within a batch of a natural sample containing a low concentration of the parameter, or\nfive times the standard deviation of a blank sample (within a batch).\nNote 5\nIf the value of uncertainty of measurement cannot be met, the best available technique should be selected (up to 60 %).\nNote 6\nThe method determines total cyanide in all forms.\nNote 7\nValues for trueness, precision and uncertainty of measurement are expressed in pH units.\nNote 8\nReference method: EN ISO 8467\nNote 9\nThe performance characteristics for individual pesticides are given as an indication. Values for the uncertainty of measurement as low as 30 % can be achieved for several pesticides, higher values up to 80 % may be allowed for a number of pesticides.\nNote 10\nThe performance characteristics apply to individual substances, specified at 25 % of the parametric value in Part B of Annex I.\nNote 11\nThe performance characteristics apply to individual substances, specified at 50 % of the parametric value in Part B of Annex I.\nNote 12\nThe uncertainty of measurement should be estimated at the level of 3 mg/l of the total organic carbon (TOC). CEN 1484 Guidelines for the determination of TOC and dissolved organic carbon (DOC) shall be used.\nNote 13\nThe uncertainty of measurement should be estimated at the level of 1,0 NTU (nephelometric turbidity units) in accordance with EN ISO 7027.\n’\n(4) point 3 is deleted.",
  "extent": "E+W+S+N.I.",
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "footnote",
      "label": "f1",
      "text": "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).’"
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/eudr/2015/1787/annex/II",
    "retrieved_at": "2026-11-01T15:21:37.119087+00:00"
  },
  "licence": "Open Government Licence v3.0",
  "licence_url": "https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/",
  "attribution": "Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives."
}