{
  "url": "https://openlegislation.uk/private-water-supplies-wales-regulations-2017/schedule-2/paragraph-1",
  "json_url": "https://openlegislation.uk/private-water-supplies-wales-regulations-2017/schedule-2/paragraph-1.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/2/paragraph/1",
  "kind": "paragraph",
  "number": "1",
  "heading": "Sampling",
  "text": "(1) A local authority must undertake monitoring for Group A parameters in accordance with this Part.\n(2) “Monitoring for Group A parameters” means sampling for each parameter listed in column 1 of Table 1 in the circumstances listed in the corresponding entry for that parameter in column 2 of that Table, in order to—\n(a) determine whether or not water complies with the concentrations or values in Schedule 1;\n(b) provide information on the organoleptic and microbiological quality of the water; and\n(c) establish the effectiveness of the treatment of the water, including disinfection.\nTable 1\nGroup A parameters\nParameter\nCircumstances\nAluminium\nIf used as a water treatment chemical\nAmmonium\nIf chloramination is used\nClostridium perfringens (including spores)\nWhere the water originates from, or is influenced by, surface waters\nColiform bacteria\nIn all supplies\nColony counts\nIn all supplies\nColour\nIn all supplies\nConductivity\nIn all supplies\nEscherichia coli (E. coli)\nIn all supplies\nHydrogen ion concentration\nIn all supplies\nIron\nIf used as a water treatment chemical\nManganese\nWhere the water originates from, or is influenced by, surface waters\nNitrate\nIf chloramination is used\nNitrite\nIf chloramination is used\nOdour\nIn all supplies\nPseudomonas aeruginosa\nOnly in the case of water in bottles or containers\nTaste\nIn all supplies\nTurbidity\nIn all supplies",
  "extent": "E+W",
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "I",
      "label": "I1",
      "text": "Sch. 2 para. 1 in force at 20.11.2017, see reg. 1"
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/wsi/2017/1041/schedule/2/paragraph/1",
    "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."
}