{
  "url": "https://openlegislation.uk/eu-directive-1991-676/article-6",
  "json_url": "https://openlegislation.uk/eu-directive-1991-676/article-6.json",
  "legislation": "eudr/1991/676",
  "legislation_title": "Council Directive of 12 December 1991 concerning the protection of waters against pollution caused by nitrates from agricultural sources (91/676/EEC)",
  "legislation_url": "https://openlegislation.uk/eu-directive-1991-676",
  "path": "article/6",
  "kind": "article",
  "number": "6",
  "heading": null,
  "text": "1. For the purpose of designating and revising the designation of vulnerable zones, Member States shall:\n(a) within two years of notification of the Directive, monitor the nitrate concentration in freshwaters over a period of one year:\n(i) at surface water sampling stations, laid down in Article 5 (4) of Directive 75/440/EEC and/or at other sampling stations which are representative of surface waters of Member States, at least monthly and more frequently during flood periods;\n(ii) at sampling stations which are representative of the groundwater aquifers of Member States, at regular intervals and taking into account the provisions of Directive 80/778/EEC;\n(b) repeat the monitoring programme outlined in (a) at least every four years, except for those sampling stations where the nitrate concentration in all previous samples has been below 25 mg/l and no new factor likely to increase the nitrage content has appeared, in which case the monitoring programme need be repeated only every eight years;\n(c) review the eutrophic state of their fresh surface waters, estuarial and coastal waters every four years.\n2. The reference methods of measurement set out in Annex IV shall be used.",
  "extent": "E+W+S+N.I.",
  "status": null,
  "version": "current",
  "annotations": [],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/eudr/1991/676/article/6",
    "retrieved_at": "2026-11-01T15:23:23.763677+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."
}