{
  "url": "https://openlegislation.uk/private-water-supplies-wales-regulations-2017/regulation-4",
  "json_url": "https://openlegislation.uk/private-water-supplies-wales-regulations-2017/regulation-4.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": "regulation/4",
  "kind": "regulation",
  "number": "4",
  "heading": "Wholesomeness",
  "text": "(1) A private water supply is to be regarded as wholesome if all the following conditions are met—\n(a) it does not contain any micro-organism, parasite or substance, alone or in conjunction with any other substance, at a concentration or value that would constitute a potential danger to human health;\n(b) it complies with the prescribed concentration or value for each parameter; and\n(c) the water satisfies the formula “[nitrate]/50 + [nitrite]/3 ≤ 1”, where the square brackets signify the concentrations in mg/1 for nitrate (NO3) and nitrite (NO2).\n(2) A reference in these Regulations to water being unwholesome means the requirements in paragraph (1) not being met.",
  "extent": "E+W",
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "I",
      "label": "I1",
      "text": "Reg. 4 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/regulation/4",
    "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."
}