{
  "url": "https://openlegislation.uk/eu-directive-2010-63/annex-III/section-B/division-11/division-11.1",
  "json_url": "https://openlegislation.uk/eu-directive-2010-63/annex-III/section-B/division-11/division-11.1.json",
  "legislation": "eudr/2010/63",
  "legislation_title": "Directive 2010/63/EU of the European Parliament and of the Council of 22 September 2010 on the protection of animals used for scientific purposes (Text with EEA relevance)",
  "legislation_url": "https://openlegislation.uk/eu-directive-2010-63",
  "path": "annex/III/section/B/division/11/division/11.1",
  "kind": "division",
  "number": "11.1",
  "heading": "Water supply and quality",
  "text": "Adequate water supply of suitable quality shall be provided at all times. Water flow in re-circulatory systems or filtration within tanks shall be sufficient to ensure that water quality parameters are maintained within acceptable levels. Water supply shall be filtered or treated to remove substances harmful to fish, where necessary. Water-quality parameters shall at all times be within the acceptable range that sustains normal activity and physiology for a given species and stage of development. The water flow shall be appropriate to enable fish to swim correctly and to maintain normal behaviour. Fish shall be given an appropriate time for acclimatisation and adaptation to changes in water-quality conditions.",
  "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/2010/63/annex/III/section/B/division/11/division/11.1",
    "retrieved_at": "2026-11-01T14:42:06.739931+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."
}