{
  "url": "https://openlegislation.uk/private-water-supplies-england-regulations-2016/schedule-1/part-1",
  "json_url": "https://openlegislation.uk/private-water-supplies-england-regulations-2016/schedule-1/part-1.json",
  "legislation": "uksi/2016/618",
  "legislation_title": "The Private Water Supplies (England) Regulations 2016",
  "legislation_url": "https://openlegislation.uk/private-water-supplies-england-regulations-2016",
  "path": "schedule/1/part/1",
  "kind": "part",
  "number": "1",
  "heading": "Wholesomeness",
  "text": "Table A\nMICROBIOLOGICAL PARAMETERS\nPrescribed concentrations or values\nParameters\nMaximum concentration or value\nUnits of measurement\nE. coli\n0\nNumber/100ml\nEnterococci\n0\nNumber/100ml\nIn the case of water in bottles or containers:\nColony count 22°C\n100\nNumber/ml\n. . .\n. . .\n. . .\nE. coli\n0\nNumber/250ml\nEnterococci\n0\nNumber/250ml\nPseudomonas aeruginosa\n0\nNumber/250ml\nTable B\nCHEMICAL PARAMETERS\nPart I: Directive requirements - prescribed concentration or values\n1 The parametric value refers to the residual monomer concentration in the water as calculated according to specifications of the maximum release from the corresponding polymer in contact with the water. This is controlled by product specification.\n2 See also the nitrate-nitrite formula in regulation 4(c).\n3 For these purposes, “pesticides” means—\nFor these purposes, “pesticides” means—\n— organic acaricides;\n— organic algicides;\n— organic fungicide;\n— organic herbicides;\n— organic insecticides;\n— organic nematocides;\n— organic rodenticides;\n— organic slimicides;\n— related products (inter alia, growth regulators and their relevant metabolites, degradation and reaction products). Only those pesticides likely to be present in a given supply need be monitored.\n4 “Pesticides total” means the sum of the concentrations of the individual pesticides detected and quantified in the monitoring process.\n5 The specified compounds are—\nThe specified compounds are—\n— benzo(b)fluoranthene;\n— benzo(k)fluoranthene;\n— benzo(ghi)perylene;\n— indeno(1,2,3-cd)pyrene.\nThe parametric value applies to the sum of the concentrations of the individual compounds detected and quantified in the monitoring process.\n6 The parametric value applies to the sum of the concentrations of the individual compounds detected and quantified in the monitoring process.\n7 The specified compounds are—\nThe specified compounds are—\n— bromodichloromethane;\n— bromoform;\n— chloroform;\n— dibromochloromethane\nThe parametric value applies to the sum of the concentrations of the individual compounds detected and quantified in the monitoring process.\nParameters\nMaximum concentration or value\nUnits of measurement\nAcrylamide1\n0.10\nμg/l\nAntimony\n5.0\nμg/l\nArsenic\n10\nμg/l\nBenzene\n1.0\nμg/l\nBenzo(a)pyrene\n0.010\nμg/l\nBoron\n1.0\nmg/l\nBromate\n10\nμg/l\nCadmium\n5.0\nμg/l\nChromium\n50\nμg/l\nCopper\n2.0\nmg/l\nCyanide\n50\nμg/l\n1, 2 dichloroethane\n3.0\nμg/l\nEpichlorohydrin1\n0.10\nμg/l\nFluoride\n1.5\nmg/l\nLead\n10\nμg/l\nMercury\n1.0\nμg/l\nNickel\n20\nμg/l\nNitrate2\n50\nmg/l\nNitrite2\n0.5 (or 0.1 in the case of treatment works)\nmg/l\nPesticides3—\nAldrin\n0.030\nμg/l\nDieldrin\n0.030\nμg/l\nHeptachlor\n0.030\nμg/l\nHeptachlor epoxide\n0.030\nμg/l\nOther pesticides\n0.10\nμg/l\nPesticides total4\n0.50\nμg/l\nPolycyclic aromatic hydrocarbons5\n0.10\nμg/l\nSelenium\n10\nμg/l\nTetrachloroethene and Trichloroethene6\n10\nμg/l\nTrihalomethanes: Total7\n100\nμg/l\nVinyl chloride1\n0.50\nμg/l\nPart II: National requirements – prescribed concentrations or values\nParameters\nMaximum concentration or value\nUnits of measurement\nAluminium\n200\nμg/l\nColour\n20\nmg/l Pt/Co\nIron\n200\nμg/l\nManganese\n50\nμg/l\nOdour\nAcceptable to consumers and no abnormal change\nSodium\n200\nmg/l\nTaste\nAcceptable to consumers and no abnormal change\nTetrachloromethane\n3\nμg/l\nTurbidity\n4\nNTU",
  "extent": "E+W+S+N.I.",
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "F",
      "label": "F1",
      "text": "Words in Sch. 1 Pt. 1 substituted (11.7.2018) by The Private Water Supplies (England) (Amendment) Regulations 2018 (S.I. 2018/707), regs. 1(1), 2(9)(a)(ii) (with reg. 3)"
    },
    {
      "type": "F",
      "label": "F2",
      "text": "Words in Sch. 1 Pt. 1 omitted (11.7.2018) by virtue of The Private Water Supplies (England) (Amendment) Regulations 2018 (S.I. 2018/707), regs. 1(1), 2(9)(a)(i) (with reg. 3)"
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/uksi/2016/618/schedule/1/part/1",
    "retrieved_at": "2026-10-28T23:23:04.925081+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."
}