{
  "url": "https://openlegislation.uk/draft-public-water-supplies-scotland-regulations-2014/schedule-1",
  "json_url": "https://openlegislation.uk/draft-public-water-supplies-scotland-regulations-2014/schedule-1.json",
  "legislation": "sdsi/2014/9780111024782",
  "legislation_title": "The Public Water Supplies (Scotland) Regulations 2014",
  "legislation_url": "https://openlegislation.uk/draft-public-water-supplies-scotland-regulations-2014",
  "path": "schedule/1",
  "kind": "schedule",
  "number": "1",
  "heading": "PRESCRIBED CONCENTRATIONS AND VALUES",
  "text": "TABLE A\nMICROBIOLOGICAL PARAMETERS\n(1)\nItem\n(2)\nParameter\n(3)\nConcentration or\nvalue (maximum)\n(4)\nUnits of\nmeasurement\n(5)\nPoint of\ncompliance\n(a)The parametric values in Part 2 are not required to protect human health (since the parametric values in Part 1 are sufficient for that purpose). The values in Part 2 are not therefore set for the purposes of Article 5(3) of the Directive.\n(b)Compliance required as to 95% of samples from each service reservoir (regulation 4(4)).\nPart 1\n1.\nEnterococci\n0\nNumber/100ml\nConsumer’s tap\n2.\nEscherichia coli\n0\nNumber/100ml\nConsumer’s tap\nPart 2\n3.\nColiform bacteria\n0\nNumber/100ml\nService reservoir\n0\nNumber/100ml\nTreatment works\n4.\nEscherichia coli\n0\nNumber/100ml\nService reservoir\n0\nNumber/100ml\nTreatment works\nNotes—\nTABLE B\nCHEMICAL PARAMETERS\n(1)\nItem\n(2)\nParameter\n(3)\nConcentration or\nvalue (maximum)\n(4)\nUnits of\nmeasurement\n(5)\nPoint of\ncompliance\n(a)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.\n(b)See also regulation 6(6).\n(c)See also regulation 4(2)(c).\n(d)The corresponding parametric value applies to each ‘other pesticide’ individually.\n(e)The parametric values in this Part are not required to protect human health (since the parametric values in Part 1 are sufficient for that purpose). The values in Part 2 are not therefore set for the purposes of Article 5(3) of the Directive.\nPart 1\n1.\nAcrylamide\n0.10\nμg/l\nConsumer’s tap\n2.\nAntimony\n5.0\nμgSb/l\nConsumer’s tap\n3.\nArsenic\n10\nμgAs/l\nConsumer’s tap\n4.\nBenzene\n1.0\nμg/l\nConsumer’s tap\n5.\nBenzo(a)pyrene\n0.010\nμg/l\nConsumer’s tap\n6.\nBoron\n1.0\nmgB/l\nConsumer’s tap\n7.\nBromate\n10\nμgBrO3/l\nConsumer’s tap\n8.\nCadmium\n5.0\nμgCd/l\nConsumer’s tap\n9.\nChromium\n50\nμgCr/l\nConsumer’s tap\n10.\nCopper\n2.0\nmgCu/l\nConsumer’s tap\n11.\nCyanide\n50\nμgCN/l\nConsumer’s tap\n12.\n1,2-dichloroethane\n3.0\nμg/l\nConsumer’s tap\n13.\nEpichlorohydrin\n0.10\nμg/l\nConsumer’s tap\n14.\nFluoride\n1.5\nmgF/l\nConsumer’s tap\n15.\nLead\n10\nμgPb/l\nConsumer’s tap\n16.\nMercury\n1.0\nμgHg/l\nConsumer’s tap\n17.\nNickel\n20\nμgNi/l\nConsumer’s tap\n18.\nNitrate\n50\nmgNO3/l\nConsumer’s tap\n19.\nNitrite\n0.50\nmgNO2/l\nConsumer’s tap\n0.10\nmgNO2/l\nTreatment works\n20.\nPesticide—\nAldrin\n0.030\nμg/l\nConsumer’s tap\nDieldrin\n0.030\nμg/l\nConsumer’s tap\nHeptachlor\n0.030\nμg/l\nConsumer’s tap\nHeptachlor epoxide\n0.030\nμg/l\nConsumer’s tap\nOther pesticide\n0.10\nμg/l\nConsumer’s tap\n21.\nPesticides: Total\n0.50\nμg/l\nConsumer’s tap\n22.\nPAH: Total\n0.10\nμg/l\nConsumer’s tap\n23.\nSelenium\n10\nμgSe/l\nConsumer’s tap\n24.\nTetrachloroethene and Trichloroethene\n10\nμg/l\nConsumer’s tap\n25.\nTHM: Total\n100\nμg/l\nConsumer’s tap\n26.\nVinyl chloride\n0.50\nμg/l\nConsumer’s tap\nPart 2\n27.\nAluminium\n200\nμgAl/l\nConsumer’s tap\n28.\nColour\n20\nmg/l Pt/Co\nConsumer’s tap\n29.\nIron\n200\nμgFe/l\nConsumer’s tap\n30.\nManganese\n50\nμgMn/l\nConsumer’s tap\n31.\nSodium\n200\nmgNa/l\nConsumer’s tap\n32.\nTetrachloromethane\n3\nμg/l\nConsumer’s tap\n33.\nTurbidity\n4\nNTU\nConsumer’s tap\nNotes—\nTABLE C\nINDICATOR PARAMETERS\n(1)\nItem\n(2)\nParameter\n(3)\nConcentration or\nvalue (maximum)\nor state\n(4)\nUnits of\nmeasurement\n(5)\nPoint of\nmonitoring\n(a)The water should not be aggressive.\n(b)In the event that the use of samples from a point within a water supply zone has not be been authorised for this parameter under regulation 8, the point of monitoring is instead the consumer’s tap.\n(c)This value, in so far as the point of monitoring is a service reservoir, is not set for the purposes of Article 5(3) of the Directive.\n(d)This value, in so far as the point of monitoring is a treatment works, is not set for the purposes of Article 5(3) of the Directive.\nPart 1\n1.\nAmmonium\n0.50\nmgNH4/l\nConsumer’s tap\n2.\nChloride\n250\nmgCl/l\nSupply point\n3.\nClostridium perfringens (including spores)\n0\nNumber/100ml\nSupply point\n4.\nColiform bacteria\n0\nNumber/100ml\nConsumer’s tap\n5.\nColony count\nNo abnormal change\nNumber/1ml\nat 22°C and\nat 37°C\nConsumer’s tap\nService reservoir\nTreatment works\n6.\nColour\nAcceptable to consumers and no abnormal change\nConsumer’s tap\n7.\nConductivity\n2500\nμS/cm at 20°C\nSupply point\n8.\nHydrogen ion\n9.5\npH value\nConsumer’s tap\n6.5 (minimum)\n9.\nOdour\nAcceptable to consumers and no abnormal change\nConsumer’s tap\n10.\nSulphate\n250\nmgSO4/l\nSupply point\n11.\nTaste\nAcceptable to consumers and no abnormal change\nConsumer’s tap\n12.\nTotal organic carbon\nNo abnormal change\nmgC/l\nSupply point\n13.\nTurbidity\n1\nNTU\nTreatment works\nPart 2\n14.\nIndicative dose\n0.10\nmSv/year\nSupply point\n15.\nTritium\n100\nBq/l\nSupply point\nNotes—\nIn this Schedule—\n“Indicative dose” means the committed effective dose for one year of ingestion resulting from all the radionuclides (whose presence has been detected in water supplied for human consumption purposes) of natural and artificial origin, but excluding tritium, potassium-40, radon and radon decay products;\n“NTU” means Nephelometric Turbidity Unit;\n“PAH: Total” means the sum of the concentrations of the following polyaromatic hydrocarbons: benzo(b)fluoranthene, benzo(k)fluoranthene, benzo(ghi)perylene and indeno(1,2,3-cd)pyrene;\n“Pesticide” means an organic insecticide, herbicide, fungicide, nematocide, acaricide, algicide, rodenticide, slimicide, molluscicide or related product (including a growth regulator), and includes the relevant metabolites, degradation and reaction products of that pesticide;\n“Pesticides: Total” refers to the sum of the concentrations of each pesticide detected and quantified in the monitoring procedure;\n“Tetrachloroethene and Trichloroethene” means the sum of the concentrations of tetrachloroethene and trichloroethene; and\n“THM: Total” means the sum of the concentrations of the following trihalomethanes: chloroform, bromoform, dibromochloromethane and bromodichloromethane.",
  "extent": null,
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "footnote",
      "label": "f1",
      "text": "(a)The parametric values in Part 2 are not required to protect human health (since the parametric values in Part 1 are sufficient for that purpose). The values in Part 2 are not therefore set for the purposes of Article 5(3) of the Directive."
    },
    {
      "type": "footnote",
      "label": "f2",
      "text": "(b)Compliance required as to 95% of samples from each service reservoir (regulation 4(4))."
    },
    {
      "type": "footnote",
      "label": "f3",
      "text": "(a)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."
    },
    {
      "type": "footnote",
      "label": "f4",
      "text": "(b)See also regulation 6(6)."
    },
    {
      "type": "footnote",
      "label": "f5",
      "text": "(c)See also regulation 4(2)(c)."
    },
    {
      "type": "footnote",
      "label": "f6",
      "text": "(d)The corresponding parametric value applies to each ‘other pesticide’ individually."
    },
    {
      "type": "footnote",
      "label": "f7",
      "text": "(e)The parametric values in this Part are not required to protect human health (since the parametric values in Part 1 are sufficient for that purpose). The values in Part 2 are not therefore set for the purposes of Article 5(3) of the Directive."
    },
    {
      "type": "footnote",
      "label": "f8",
      "text": "(a)The water should not be aggressive."
    },
    {
      "type": "footnote",
      "label": "f9",
      "text": "(b)In the event that the use of samples from a point within a water supply zone has not be been authorised for this parameter under regulation 8, the point of monitoring is instead the consumer’s tap."
    },
    {
      "type": "footnote",
      "label": "f10",
      "text": "(c)This value, in so far as the point of monitoring is a service reservoir, is not set for the purposes of Article 5(3) of the Directive."
    },
    {
      "type": "footnote",
      "label": "f11",
      "text": "(d)This value, in so far as the point of monitoring is a treatment works, is not set for the purposes of Article 5(3) of the Directive."
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/sdsi/2014/9780111024782/schedule/1",
    "retrieved_at": "2026-10-30T15:35:33.542827+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."
}