{
  "url": "https://openlegislation.uk/eu-directive-2020-2184/annex-III/part-B/division-1",
  "json_url": "https://openlegislation.uk/eu-directive-2020-2184/annex-III/part-B/division-1.json",
  "legislation": "eudr/2020/2184",
  "legislation_title": "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)",
  "legislation_url": "https://openlegislation.uk/eu-directive-2020-2184",
  "path": "annex/III/part/B/division/1",
  "kind": "division",
  "number": "1",
  "heading": "Chemical and indicator parameters",
  "text": "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, 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.\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. Minimum performance characteristic ‘Uncertainty of measurement’\nParameters\nUncertainty of measurement(See Note 1)% of the parametric value (except for pH)\nNotes\nAluminium\n25\nAmmonium\n40\nAcrylamide\n30\nAntimony\n40\nArsenic\n30\nBenzo(a)pyrene\n50\nSee Note 2\nBenzene\n40\nBisphenol A\n50\nBoron\n25\nBromate\n40\nCadmium\n25\nChloride\n15\nChlorate\n40\nChlorite\n40\nChromium\n30\nCopper\n25\nCyanide\n30\nSee Note 3\n1,2-dichloroethane\n40\nEpichlorohydrin\n30\nFluoride\n20\nHAAs\n50\nHydrogen ion concentration pH\n0,2\nSee Note 4\nIron\n30\nLead\n30\nManganese\n30\nMercury\n30\nMicrocystin-LR\n30\nNickel\n25\nNitrate\n15\nNitrite\n20\nOxidisability\n50\nSee Note 5\nPesticides\n30\nSee Note 6\nPFAS\n50\nPolycyclic aromatic hydrocarbons\n40\nSee Note 7\nSelenium\n40\nSodium\n15\nSulphate\n15\nTetrachloroethene\n40\nSee Note 8\nTrichloroethene\n40\nSee Note 8\nTrihalomethanes – total\n40\nSee Note 7\nTotal organic carbon (TOC)\n30\nSee Note 9\nTurbidity\n30\nSee Note 10\nUranium\n30\nVinyl chloride\n50",
  "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/2020/2184/annex/III/part/B/division/1",
    "retrieved_at": "2026-11-01T15:21:22.865628+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."
}