{
  "url": "https://openlegislation.uk/draft-public-water-supplies-scotland-regulations-2014/schedule-2",
  "json_url": "https://openlegislation.uk/draft-public-water-supplies-scotland-regulations-2014/schedule-2.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/2",
  "kind": "schedule",
  "number": "2",
  "heading": "MONITORING",
  "text": "TABLE 1\nPARAMETERS AND CIRCUMSTANCES FOR CHECK MONITORING\n(1)\nItem\n(2)\nParameter\n(3)\nCircumstances\n1.\nAluminium\nWhen used as flocculant or where the water originates from, or is influenced by, surface waters.\n2.\nAmmonium\n3.\nClostridium perfringens (including spores)\nWhere the water originates from, or is influenced by, surface waters.\n4.\nColiform bacteria\n5.\nColony count\n6.\nColour\n7.\nConductivity\n8.\nEscherichia coli\n9.\nHydrogen ion\n10.\nIron\nWhen used as flocculant or where the water originates from, or is influenced by, surface waters.\n11.\nManganese\nWhere the water originates from, or is influenced by, surface waters.\n12.\nNitrate\nWhen chloramination is practised.\n13.\nNitrite\nWhen chloramination is practised.\n14.\nOdour\n15.\nTaste\n16.\nTurbidity\nTABLE 2\nANNUAL SAMPLING FREQUENCIES: SAMPLING POINTS\n(1)\nItem\n(2)\nParameter\n(3)\nEstimated population of\nwater supply zone\n(4)\nReduced\n(5)\nStandard\n(a)Sampling at the frequencies specified in this table for check monitoring is required only when the circumstances for this parameter in column (3) of Table 1 apply (see regulation 6(4)(b)). Where this is not the case, sampling at the frequencies specified in this table for audit monitoring is required instead.\n(b)Subject to note (e), samples for this parameter may, to the extent authorised under regulation 8 for a water supply zone, be taken from alternative supply points in accordance with regulation 9(1)(b).\n(c)Only those pesticides which are likely to be present in a given supply need to be monitored.\n(d)Where the population is not an exact multiple of 5,000, the population figure should be rounded up to the nearest multiple of 5,000.\n(e)If sodium hypochlorite is added after water has left a treatment works in the water supply zone, monitoring for this parameter must be carried out at sampling points (rather than at supply points).\nSubject to check monitoring\n1.\nColiform bacteria\n< 100\n–\n4\n2.\nEscherichia coli\n≥100\n–\n12 per 5,000\n3.\nResidual disinfectant\npopulation\n4.\nAluminium\n< 100\n1\n2\n5.\nAmmonium\n100-4,999\n2\n4\n6.\nClostridium perfringens (including spores)\n5,000-9,999\n6\n12\n10,000-29,999\n12\n24\n7.\nColony count\n30,000-49,999\n18\n36\n8.\nColour\n50,000-79,999\n26\n52\n9.\nConductivity\n80,000-100,000\n38\n76\n10.\nHydrogen ion\n11.\nIron\n12.\nManganese\n13.\nNitrate\n14.\nNitrite\n15.\nOdour\n16.\nTaste\n17.\nTurbidity\nSubject to audit monitoring\n18.\nAntimony\n< 100\n–\n1\n19.\nArsenic\n100-4,999\n–\n4\n20.\nBenzene\n5,000-100,000\n–\n8\n21.\nBenzo(a)pyrene\n22.\nBoron\n23.\nBromate\n24.\nCadmium\n25.\nChloride\n26.\nChromium\n27.\nCopper\n28.\nCyanide\n29.\n1,2-dichloroethane\n30.\nEnterococci\n31.\nFluoride\n32.\nLead\n33.\nMercury\n34.\nNickel\n35.\nPesticide\n36.\nPAH: Total\n37.\nSelenium\n38.\nSodium\n39.\nSulphate\n40.\nTetrachloroethene and\nTrichloroethene\n41.\nTetrachloromethane\n42.\nTHM: Total\n43.\nTotal organic carbon\n44.\nIndicative dose—\nGross alpha\nGross beta\n45.\nTritium\nNotes—\nTABLE 3\nANNUAL SAMPLING FREQUENCIES: SUPPLY POINTS\n(1)\nItem\n(2)\nParameter\n(3)\nVolume of water\nsupplied m3/d\n(4)\nReduced\n(5)\nStandard\nNotes—\n(a)Sampling at the frequencies specified in this table for check monitoring is required only where the water originates from, or is influenced by, surface waters (see Table 1). Where this is not the case, sampling at the frequencies specified in this table for audit monitoring is required instead.\n(b)If sodium hypochlorite is added after water has left a treatment works in the water supply zone, audit monitoring for this parameter must be carried out at sampling points (rather than at supply points).\n(c)Only those pesticides which are likely to be present in a given supply need to be monitored.\nSubject to check monitoring\n1.\nClostridium perfringens (including spores)\n< 20\n–\n2\n20-999\n2\n4\n2.\nConductivity\n1,000-1,999\n6\n12\n2,000-5,999\n12\n24\n6,000-9,999\n18\n36\n10,000-15,999\n26\n52\n16,000-32,999\n52\n104\n33,000-49,999\n78\n156\n50,000-67,999\n104\n208\n68,000-84,999\n130\n260\n85,000-101,999\n156\n312\n102,000-119,999\n183\n365\n120,000-241,999\n365\n730\n242,000-484,999\n730\n1,460\n485,000-728,999\n1,095\n2,190\nSubject to audit monitoring\n3.\nBenzene\n< 20\n–\n1\n4.\nBoron\n20-999\n–\n4\n5.\nBromate\n1,000-49,999\n–\n8\n6.\nChloride\n50,00-89,999\n–\n12\n7.\nCyanide\n90,000-299,999\n–\n24\n8.\n1,2-dichloroethane\n300,000-649,999\n–\n36\n9.\nFluoride\n≥ 650,000\n–\n48\n10.\nMercury\n11.\nPesticide\n12.\nSulphate\n13.\nTetrachloroethene and\nTrichloroethene\n14.\nTetrachloromethane\n15.\nTotal organic carbon\n16.\nIndicative dose—\nGross alpha\nGross beta\n17.\nTritium\nTABLE 4\nANNUAL SAMPLING FREQUENCIES: TREATMENT WORKS\n(1)\nItem\n(2)\nParameter\n(3)\nVolume of water\nsupplied m3/d\n(4)\nReduced\n(5)\nStandard\nNotes—\n(a)Sampling at the frequencies specified in this table for check monitoring is required only when chloramination is practised. When this is not the case, this parameter must be sampled instead at the frequencies specified in this table for audit monitoring.\nSubject to check monitoring\n1.\nColiform bacteria\n< 20\n–\n4\n2.\nColony count\n20-1,999\n12\n52\n3.\nEscherichia coli\n2,000-5,999\n52\n104\n4.\nResidual disinfectant\n6,000-11,999\n≥12,000\n104\n208\n208\n365\n5.\nNitrite\n< 20\n–\n2\n6.\nTurbidity\n20-999\n2\n4\n1,000-1,999\n6\n12\n2,000-5,999\n12\n24\n6,000-9,999\n18\n36\n10,000-15,999\n26\n52\n16,000-32,999\n52\n104\n33,000-49,999\n78\n156\n50,000-67,999\n104\n208\n68,000-84,999\n130\n260\n85,000-101,999\n156\n312\n102,000-119,999\n183\n365\n120,000-241,999\n365\n730\n242,000-484,999\n730\n1,460\n485,000-728,999\n1,095\n2,190\nSubject to audit monitoring\n7.\nNitrite\n< 20\n–\n1\n20-999\n–\n4\n1,000-49,999\n–\n8\n50,000-89,999\n–\n12\n90,000-299,999\n–\n24\n300,000-649,999\n–\n36\n≥650,000\n–\n48\nIn this Schedule “Indicative dose”, “Pesticide”, “PAH: Total”, “Tetrachloroethene and Trichloroethene” and “THM: Total” have the same meanings as they have in Schedule 1.",
  "extent": null,
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "footnote",
      "label": "f1",
      "text": "This table specifies the number of samples to be taken at sampling points for the purposes of regulation 9(1)(a) and (2)."
    },
    {
      "type": "footnote",
      "label": "f2",
      "text": "(d)Where the population is not an exact multiple of 5,000, the population figure should be rounded up to the nearest multiple of 5,000."
    },
    {
      "type": "footnote",
      "label": "f3",
      "text": "(a)Sampling at the frequencies specified in this table for check monitoring is required only when the circumstances for this parameter in column (3) of Table 1 apply (see regulation 6(4)(b)). Where this is not the case, sampling at the frequencies specified in this table for audit monitoring is required instead."
    },
    {
      "type": "footnote",
      "label": "f4",
      "text": "(b)Subject to note (e), samples for this parameter may, to the extent authorised under regulation 8 for a water supply zone, be taken from alternative supply points in accordance with regulation 9(1)(b)."
    },
    {
      "type": "footnote",
      "label": "f5",
      "text": "(e)If sodium hypochlorite is added after water has left a treatment works in the water supply zone, monitoring for this parameter must be carried out at sampling points (rather than at supply points)."
    },
    {
      "type": "footnote",
      "label": "f6",
      "text": "(c)Only those pesticides which are likely to be present in a given supply need to be monitored."
    },
    {
      "type": "footnote",
      "label": "f7",
      "text": "This table specifies the number of samples to be taken at supply points for the purposes of regulation 9(1)(b) and (2)."
    },
    {
      "type": "footnote",
      "label": "f8",
      "text": "(a)Sampling at the frequencies specified in this table for check monitoring is required only where the water originates from, or is influenced by, surface waters (see Table 1). Where this is not the case, sampling at the frequencies specified in this table for audit monitoring is required instead."
    },
    {
      "type": "footnote",
      "label": "f9",
      "text": "(b)If sodium hypochlorite is added after water has left a treatment works in the water supply zone, audit monitoring for this parameter must be carried out at sampling points (rather than at supply points)."
    },
    {
      "type": "footnote",
      "label": "f10",
      "text": "(c)Only those pesticides which are likely to be present in a given supply need to be monitored."
    },
    {
      "type": "footnote",
      "label": "f11",
      "text": "This table specifies the number of samples to be taken at treatment works for the purposes of regulation 11."
    },
    {
      "type": "footnote",
      "label": "f12",
      "text": "(a)Sampling at the frequencies specified in this table for check monitoring is required only when chloramination is practised. When this is not the case, this parameter must be sampled instead at the frequencies specified in this table for audit monitoring."
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/sdsi/2014/9780111024782/schedule/2",
    "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."
}