{
  "url": "https://openlegislation.uk/surface-waters-dangerous-substances-classification-regulations-northern-ireland-1998/schedule-5/paragraph-3",
  "json_url": "https://openlegislation.uk/surface-waters-dangerous-substances-classification-regulations-northern-ireland-1998/schedule-5/paragraph-3.json",
  "legislation": "nisr/1998/397",
  "legislation_title": "Surface Waters (Dangerous Substances) (Classification) Regulations (Northern Ireland) 1998",
  "legislation_url": "https://openlegislation.uk/surface-waters-dangerous-substances-classification-regulations-northern-ireland-1998",
  "path": "schedule/5/paragraph/3",
  "kind": "paragraph",
  "number": "3",
  "heading": null,
  "text": "In relation to dichlorvos used as a treatment for sea-lice infestation, compliance with the relevant limit in column (2) of Table 7 shall be determined by reference only to samples taken as nearly as may be after 24 hours have elapsed since it was so used.\nTABLE 6\n(1)\n(2)\nSubstance\nLimit (in microgrammes per litre) (annual mean)\nArsenic\n25\nAtrazine and Simazine\n2 (for the two substances in total)\nAzinphos-methyl\n0.01\nDichlorvos\n0.04\nEndosulphan\n0.003\nFenitrothion\n0.01\nMalathion\n0.02\nTrifluralin\n0.1\nTABLE 7\n(1)\n(2)\nSubstance\nLimit (in microgrammes per litre)\nDichlorvos\n0.6\nTributyltin\n0.002\nTriphenyltin and its derivatives\n0.008",
  "extent": null,
  "status": null,
  "version": "current",
  "annotations": [],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/nisr/1998/397/schedule/5/paragraph/3",
    "retrieved_at": "2026-10-29T02:22:19.119822+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."
}