{
  "url": "https://openlegislation.uk/surface-waters-abstraction-for-drinking-water-classification-regulations-northern-ireland-1996/schedule-2/part-2",
  "json_url": "https://openlegislation.uk/surface-waters-abstraction-for-drinking-water-classification-regulations-northern-ireland-1996/schedule-2/part-2.json",
  "legislation": "nisr/1996/603",
  "legislation_title": "The Surface Waters (Abstraction for Drinking Water) (Classification) Regulations (Northern Ireland) 1996",
  "legislation_url": "https://openlegislation.uk/surface-waters-abstraction-for-drinking-water-classification-regulations-northern-ireland-1996",
  "path": "schedule/2/part/2",
  "kind": "part",
  "number": null,
  "heading": "Part II",
  "text": "Population Served\nClassification DW1\nClassification DW2\nClassification DW3\nI\nII\nIII\nI\nII\nIII\nI\nII\nIII\n1 This column applies to the parameters −pH, coloration, total suspended solids, temperature, conductivity, odour, nitrates, chlorides, phosphates, chemical oxygen demand (COD), dissolved oxygen saturation rate, biochemical oxygen demand (BOD5) and ammonium.\n2 This column applies to the parameters — dissolved iron, manganese, copper, zinc, sulphates, surfactants, phenols, nitrogen by the Kjeldahl method, total coliforms and faecal coliforms.\n3 This column applies to the parameters — fluorides, boron, arsenic, cadmium, total chromium, lead, selenium, mercury, barium, cyanide, dissolved or emulsified hydrocarbons, polycyclic aromatic hydrocarbons, total pesticides, substances extractable by chloroform, faecal streptococci and salmonella.\n<10,000\n1\n1\n1\n1\n1\n1\n2\n1\n1\n> 10,000 to ≤30,000\n1\n1\n1\n2\n1\n1\n3\n1\n1\n>30,000 to ≤100,000\n2\n1\n1\n4\n2\n1\n6\n2\n1\n>100,000\n3\n2\n1\n8\n4\n1\n12\n4\n1",
  "extent": "N.I.",
  "status": "prospective",
  "version": "current",
  "annotations": [
    {
      "type": "footnote",
      "label": "f1",
      "text": "1 This column applies to the parameters −pH, coloration, total suspended solids, temperature, conductivity, odour, nitrates, chlorides, phosphates, chemical oxygen demand (COD), dissolved oxygen saturation rate, biochemical oxygen demand (BOD5) and ammonium."
    },
    {
      "type": "footnote",
      "label": "f2",
      "text": "2 This column applies to the parameters — dissolved iron, manganese, copper, zinc, sulphates, surfactants, phenols, nitrogen by the Kjeldahl method, total coliforms and faecal coliforms."
    },
    {
      "type": "footnote",
      "label": "f3",
      "text": "3 This column applies to the parameters — fluorides, boron, arsenic, cadmium, total chromium, lead, selenium, mercury, barium, cyanide, dissolved or emulsified hydrocarbons, polycyclic aromatic hydrocarbons, total pesticides, substances extractable by chloroform, faecal streptococci and salmonella."
    }
  ],
  "outstanding_effects": [
    {
      "type": "coming into force",
      "affecting": "nisr/1996/603",
      "affecting_title": "The Surface Waters (Abstraction for Drinking Water) (Classification) Regulations (Northern Ireland) 1996"
    },
    {
      "type": "coming into force",
      "affecting": "nisr/1996/603",
      "affecting_title": "The Surface Waters (Abstraction for Drinking Water) (Classification) Regulations (Northern Ireland) 1996"
    }
  ],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/nisr/1996/603/schedule/2/part/2",
    "retrieved_at": "2026-10-29T02:31:40.185100+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."
}