{
  "url": "https://openlegislation.uk/private-water-supplies-wales-regulations-2017/schedule-1/part-2",
  "json_url": "https://openlegislation.uk/private-water-supplies-wales-regulations-2017/schedule-1/part-2.json",
  "legislation": "wsi/2017/1041",
  "legislation_title": "The Private Water Supplies (Wales) Regulations 2017",
  "legislation_url": "https://openlegislation.uk/private-water-supplies-wales-regulations-2017",
  "path": "schedule/1/part/2",
  "kind": "part",
  "number": "2",
  "heading": "Indicator Parameters",
  "text": "TABLE C:\nPrescribed concentrations, values or states\nParameters\nMaximum concentration or value\nUnits of Measurement\n(1)The water should not be aggressive.\n(2)Only in the case of surface water or groundwater that has been influenced by surface water.\nAmmonium\n0.50\nmg/l\nChloride\n250\nmg/l\nClostridium perfringens (including spores)\n0\nNumber/100ml\nColiform bacteria\n0\nNumber/100ml (Number/250ml in the case of water put into bottles or containers)\nColony counts\nNo abnormal change\nNumber/ml at 22ºC\nConductivity\n2500\nµS/cm at 20ºC\nHydrogen ion\n9.5 (maximum)\npH value\n6.5 (minimum) (in the case of still\nwater put into bottles or containers the minimum is 4.5)\npH value\nSulphate\n250\nmg/l\nTotal organic carbon (TOC)\nNo abnormal change\nmgC/l\nTurbidity\n1\nNTU",
  "extent": "E+W",
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "I",
      "label": "I1",
      "text": "Sch. 1 Pt. 2 in force at 20.11.2017, see reg. 1"
    },
    {
      "type": "footnote",
      "label": "f1",
      "text": "(1)The water should not be aggressive."
    },
    {
      "type": "footnote",
      "label": "f2",
      "text": "(2)Only in the case of surface water or groundwater that has been influenced by surface water."
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/wsi/2017/1041/schedule/1/part/2",
    "retrieved_at": "2026-10-28T23:24:57.489600+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."
}