{
  "url": "https://openlegislation.uk/water-supply-water-quality-regulations-2018/schedule-3/part-2/paragraph-wrapper4n1",
  "json_url": "https://openlegislation.uk/water-supply-water-quality-regulations-2018/schedule-3/part-2/paragraph-wrapper4n1.json",
  "legislation": "wsi/2018/647",
  "legislation_title": "The Water Supply (Water Quality) Regulations 2018",
  "legislation_url": "https://openlegislation.uk/water-supply-water-quality-regulations-2018",
  "path": "schedule/3/part/2/paragraph/wrapper4n1",
  "kind": "paragraph",
  "number": null,
  "heading": null,
  "text": "This table and each table which follows it in this Part set out the annual sampling frequencies for all the substances and parameters comprising each of the groups to which they correspond, those groups having been outlined in Part 1 of this Schedule. These are determined for each water supply zone according to its estimated population (as specified in column one of each table in this Part). The number of samples to be taken is the standard number specified in column 2, unless a notice varying this number has been given under regulation 9.\nEstimated population of water supply zone\nStandard sampling frequency per year\n<100\n2\n100-4,999\n4\n5,000—9,999\n12\n10,000-29,999\n24\n30,000-49,999\n36\n50,000-79,999\n52\n80,000-100,000\n76\nTable 9\nAnnual sampling frequencies for Group B1 parameters: water supply zones\nEstimated population of water supply zone\nStandard sampling frequency per year\n<100\n1\n100-4,999\n4\n5,000-100,000\n8\nTable 10\nAnnual sampling frequencies for Group A1: water supply zones\nEstimated population of water supply zone\nStandard sampling frequency per year\n<100\n4\n≥100\n12 per 5,000 population",
  "extent": null,
  "status": null,
  "version": "current",
  "annotations": [],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/wsi/2018/647/schedule/3/part/2/paragraph/wrapper4n1",
    "retrieved_at": "2026-10-28T23:23:05.047051+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."
}