{
  "url": "https://openlegislation.uk/surface-waters-fishlife-classification-regulations-1997/schedule/part-II",
  "json_url": "https://openlegislation.uk/surface-waters-fishlife-classification-regulations-1997/schedule/part-II.json",
  "legislation": "uksi/1997/1331",
  "legislation_title": "The Surface Waters (Fishlife) (Classification) Regulations 1997",
  "legislation_url": "https://openlegislation.uk/surface-waters-fishlife-classification-regulations-1997",
  "path": "schedule/part/II",
  "kind": "part",
  "number": "II",
  "heading": "ZINC CONCENTRATIONS (mg/l Zn) FOR DIFFERENT WATER HARDNESS VALUES BETWEEN 10 AND 500 mg/l CaCO3",
  "text": "Classification of waters\nWater hardness (mg/l CaCO3)\n10\n50\n100\n500\nSalmonid waters (mg/l Zn)\n0.03\n0.2\n0.3\n0.5\nCyprinid waters (mg/l Zn)\n0.3\n0.7\n1.0\n2.0",
  "extent": null,
  "status": null,
  "version": "current",
  "annotations": [],
  "outstanding_effects": [
    {
      "type": "words substituted",
      "affecting": "wsi/2013/755",
      "affecting_title": "The Natural Resources Body for Wales (Functions) Order 2013"
    }
  ],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/uksi/1997/1331/schedule/part/II",
    "retrieved_at": "2026-10-29T12:08:21.146177+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."
}