{ "url": "https://openlegislation.uk/water-framework-directive-priority-substances-and-classification-amendment-regulations-northern-ireland-2015-revoked/schedule-1", "json_url": "https://openlegislation.uk/water-framework-directive-priority-substances-and-classification-amendment-regulations-northern-ireland-2015-revoked/schedule-1.json", "legislation": "nisr/2015/45", "legislation_title": "The Water Framework Directive (Priority Substances and Classification) (Amendment) Regulations (Northern Ireland) 2015 (revoked)", "legislation_url": "https://openlegislation.uk/water-framework-directive-priority-substances-and-classification-amendment-regulations-northern-ireland-2015-revoked", "path": "schedule/1", "kind": "schedule", "number": "1", "heading": "Schedule substituted for Schedule 1 to the Water Framework Directive (Priority Substances and Classification) Regulations (Northern Ireland) 2011", "text": "“SCHEDULE 1\nPART 1\nCriteria for identifying the types of river, lake or transitional water to which the environmental standards specified in Part 2 of this Schedule apply\n1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\n2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\n3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\n4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\n5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\n6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\n7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\nPART 2\nEnvironmental Standards\nEnvironmental standards for river water quality\n1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\n2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\n3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\n4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\nEnvironmental standards for river flows\n5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\nEnvironmental standards for lake water quality\n6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\n7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\n8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\n9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\nEnvironmental standards for protection of inland lake water levels\n10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\nEnvironmental standards for transitional and coastal water quality\n11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\n12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\nEnvironmental standards for specific pollutants\n13 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\nEnvironmental Standards for River Water Quality\nTable 1\nStandards for dissolved oxygen in rivers\n1 Where a lowland, high alkalinity river is a salmonid river the standards for the upland, low alkalinity type will apply.\nDissolved oxygen (percent saturation)\n(10-percentile)\nColumn 1\nColumn 2\nColumn 3\nColumn 4\nColumn 5\nColumn 6\nType1\nHigh\nGood\nModerate\nPoor\nBad\nUpland and low alkalinity\n80\n75\n64\n50\n< 50\nLowland and high alkalinity\n70\n60\n54\n45\n< 45\nTable 2\nStandards for ammonia in rivers\n1 Note that Ammonia is a Specific Pollutant and considered as such for compliance. It is included in this section as it is commonly assessed alongside the other inorganic chemistry elements.\nTotal ammonia1(mg/l)\n(90-percentile)\nColumn 1\nColumn 2\nColumn 3\nColumn 4\nColumn 5\nColumn 6\nType\nHigh\nGood\nModerate\nPoor\nBad\nUpland and low alkalinity\n0.2\n0.3\n0.75\n1.1\n> 1.1\nLowland and high alkalinity\n0.3\n0.6\n1.1\n2.5\n> 2.5\nTable 3\nStandards for Biochemical Oxygen Demand in rivers\n1 The standard for Biochemical Oxygen Demand shall be used when deciding action to meet the standard for dissolved oxygen.\n2 Where a lowland, high alkalinity river is a salmonid river the standards for the upland, low alkalinity type will apply.\nBiochemical oxygen demand (mg/l)1\n(90-percentile)\nColumn 1\nColumn 2\nColumn 3\nColumn 4\nColumn 5\nColumn 6\nType2\nHigh\nGood\nModerate\nPoor\nBad\nUpland and low alkalinity\n3\n4\n6\n7.5\n> 7.5\nLowland and high alkalinity\n4\n5\n6.5\n9\n> 9\nTable 4\nStandards for temperature in rivers\nTemperature (◦C) as an annual 98th percentile standard\nColumn 1\nColumn 2\nColumn 3\nColumn 4\nColumn 5\nType\nHigh\nGood\nModerate\nPoor\nSalmonid\n20\n23\n28\n30\nCyprinid\n25\n28\n30\n32\nTable 5\nHigh environmental standards for river flows\n1 ‘Q’ is the mean daily flow for a specified period of time\n2 ‘Qx’ is the Q that is expected to be exceeded by ‘x’ percent for a specified period of time\nPermitted abstraction per day as a percentage of the natural mean daily flow(Q)1\nHigh\nColumn 1\nColumn 2\nColumn 3\nMaximum permitted % abstraction at Q exceeding Q952\nMaximum permitted % abstraction at Q not exceeding Q95\nA1, A2 (downstream), A2 (headwaters), B1, B2, C2, D2\n10\n5\nTable 6\nGood environmental standards for river flows\nPermitted abstraction per day as a percentage of the natural mean daily flow(Q)\nGood\nColumn 1\nColumn 2\nColumn 3\nColumn 4\nColumn 5\nRiver type\nMaximum % abstraction at Q exceeding Q60\nMaximum % abstraction at Q exceeding Q70\nMaximum % abstraction at Q exceeding Q95\nMaximum % abstraction at Q not exceeding Q95\nA1\n35\n30\n25\n20\nA2 (downstream), B1, B2\n30\n25\n20\n15\nA2 (headwaters), C2, D2\n25\n20\n15\n10\nTable 7\nModerate environmental standards for river flows\n1 incremental increase in allowable take at flows (R ÷ G) ÷ 0.25\nTable 12\nType-specific total phosphorus standards for lakes where the standards specified in Table 11 above do not apply\nAnnual mean concentration of total phosphorus (µg/l)\nColumn 1\nColumn 2\nColumn 3\nColumn 4\nColumn 5\nColumn 6\nGeological and depth category\nHigh\nGood\nModerate\nPoor\nBad\nHigh alkalinity; shallow\n16\n23\n46\n92\n> 92\nHigh alkalinity; very shallow\n23\n31\n62\n124\n> 124\nModerate alkalinity; deep\n8\n12\n24\n48\n> 48\nModerate alkalinity; shallow\n11\n16\n32\n64\n> 64\nModerate alkalinity; very shallow\n15\n22\n44\n88\n> 88\nLow alkalinity; deep\n5\n8\n16\n32\n> 32\nLow alkalinity; shallow\n7\n10\n20\n40\n> 40\nLow alkalinity; very shallow\n9\n14\n28\n56\n> 56\nMarl; shallow\n9\n20\n40\n80\n> 80\nMarl; very shallow\n10\n24\n48\n96\n> 96\nTable 13\nEnvironmental standards for lake water levels\n1 The reference conditions lake surface area means the natural lake surface area in the absence of any abstractions, discharges or other man-made influences\nDaily maximum % reduction in the habitable zone lake surface area for 99% of the days in any year\nColumn 1\nColumn 2\nColumn 3\nColumn 4\nHigh\nGood\nModerate\nPoor\n1\n5\n10\n20\nThe habitable zone lake surface is dependent on whether the lake is considered to have the geological sub-type “Peat” or “Non-Peat”.\nThe habitable zone lake surface area means the proportion of the reference conditions1 lake surface area from the shore to a depth 5 metres deeper than the depth to which light penetration to the lake bed would be sufficient to enable the growth of rooted plants (macrophytes) or bottom-living algae.\nIn the absence of field data to the contrary, the depth to which light penetration to the lake bed is sufficient to enable the growth of rooted plants (macrophytes) or bottom-living algae may be taken to be 2 metres for lakes with the geological sub-type of “Peat” and 7 metres for “Non-Peat” lakes. The lake habitable zone extends 5m below the level of light penetration to account for impacts on the aphotic habitat.\nEnvironmental Standards for Transitional and Coastal Water Quality\nTable 14\nDissolved oxygen standards for transitional and coastal waters with salinities normalised to 35\nDissolved oxygen concentrations (mg/l) as 5-percentile values\nHigh\n5.7\nGood\n4.0\nModerate\n2.4\nPoor\n1.6\nBad\n<1.6\nTable 15\nDissolved oxygen standards for transitional and coastal waters with salinities <35\nDissolved oxygen concentrations (mg/l) as 5-percentile values\nHigh\n≥5.7\nGood\n≥4.0 and <5.7\nModerate\n≥2.4 and <4.0\nPoor\n≥1.6 and <2.4\nBad\n<1.6\nTable 16\nDissolved inorganic nitrogen standards for coastal waters with salinities from 30-34.5 normalised to salinity of 32, and transitional waters with salinities < 30 normalised to a salinity of 25.\nMean dissolved inorganic nitrogen concentration (micromoles per litre) during the period 1st December to 28th February\nHigh\n12\nGood\n18\nModerate\n30\nPoor\n40.5\nBad\n>40.5\nEnvironmental Standards for Specific Pollutants\nTable 17\nEnvironmental standards for 2,4-Dichlorophenoxyacetic acid (2,4-D)\n1 The standards for 2,4 D specified in Column 2 and Column 4 must not be used for the purpose of classifying the ecological status or potential of bodies of surface water.\nGood standards for rivers and freshwater lakes\nGood standards for transitional and coastal waters\nColumn 1\nColumn 21\nColumn 3\nColumn 41\nAnnual mean (µg/l)\n95-percentile (µg/l)\nAnnual mean (µg/l)\n95-percentile (µg/l)\n0.3\n1.3\n0.3\n1.3\nTable 18\nEnvironmental standards for 2,4-Dichlorophenol\nGood standard for rivers and freshwater lakes\nGood standard for transitional and coastal waters\nColumn 1\nColumn 2\nColumn 3\nColumn 4\nAnnual mean (µg/l)\n95-percentile (µg/l)\nAnnual mean (µg/l)\n95-percentile (µg/l)\n4.2\n140\n0.42\n6\nTable 19\nEnvironmental standards for 3,4-Dichloroaniline\nGood standard for rivers and freshwater lakes\nGood standard for transitional and coastal waters\nColumn 1\nColumn 2\nColumn 3\nColumn 4\nAnnual mean (µg/l)\n95-percentile (µg/l)\nAnnual mean (µg/l)\n95-percentile (µg/l)\n0.2\n5.4\n0.2\n5.4\nTable 20\nEnvironmental standards for arsenic (dissolved)\n1 The standard for arsenic refers to the dissolved fraction of a water sample obtained by filtration through a 0.45µm filter or any equivalent pre-treatment\nGood standard for rivers and freshwater lakes\nGood standard for transitional and coastal waters\nColumn 11\nColumn 21\nAnnual mean (µg/l)\nAnnual mean (µg/l)\n50\n25\nTable 21\nEnvironmental standards for benzyl butyl phthalate\nGood standard for rivers and freshwater lakes\nGood standard for transitional and coastal waters\nColumn 1\nColumn 2\nColumn 1\nColumn 2\nAnnual mean (µg/l)\n95-percentile (µg/l)\nAnnual mean (µg/l)\n95-percentile (µg/l)\n7.5\n51\n0.75\n10\nTable 22\nEnvironmental standards for carbendazim\nGood standards for rivers and freshwater lakes\nColumn 1\nColumn 2\nAnnual mean (µg/l)\n95-percentile (µg/l)\n0.15\n0.7\nTable 23\nEnvironmental standards for chlorine\n1 The standards for chlorine specified in Column 2 and 3 must not be used for the purpose of classifying the ecological status or potential of bodies of surface water.\n2 The term “total residual oxidants” refers to the sum of all oxidising agents existing in water, expressed as available chlorine.\nGood standards for rivers and freshwater lakes\nGood standard for transitional and coastal waters\nColumn 1\nColumn 21\nColumn 31\nAnnual mean concentration (µg/l) of total available chlorine\n95-percentile concentration (µg/l) of total available chlorine\n95-percentile concentration (µg/l) of total residual oxidant2\n2\n5\n10\nTable 24\nEnvironmental standards for chlorothalonil\nGood standards for rivers and freshwater lakes\nColumn 1\nColumn 2\nAnnual mean (µg/l)\n95-percentile (µg/l)\n0.035\n1.2\nTable 25\nEnvironmental standards for chromium VI\n1 The standard for chromium VI specified in column 3 must not be used for the purpose of classifying the ecological status or potential of bodies of surface water.\nGood standard for rivers and freshwater lakes\nGood standards for transitional and coastal waters\nColumn 1\nColumn 2\nColumn 31\nAnnual mean concentration (µg/l) of dissolved chromium VI\nAnnual mean concentration (µg/l) of dissolved chromium VI\n95-percentile concentration (µg/l) of dissolved chromium VI\n3.4\n0.6\n32\nTable 26\nEnvironmental standards for chromium III\n1 The standard for chromium III specified in column 2 must not be used for the purpose of classifying the ecological status or potential of bodies of surface water\nGood standards for rivers and freshwater lakes\nColumn 1\nColumn 21\nAnnual mean concentration (µg/l) of dissolved chromium III\n95-percentile concentration (µg/l) of dissolved chromium III\n4.7\n32\nTable 27\nEnvironmental standards for copper\n1 bioavailable means the fraction of the dissolved concentration of copper likely to result in toxic effects as determined using the Metal Bioavailability Assessment Tool (also referred to as a PNEC Estimator) for copper.\n2 The recommended salt water standard applies to the fraction of a water sample that passes through a 0.45-µm filter or that is obtained by any equivalent pre-treatment.\n3 “DOC” means the annual mean concentration of dissolved organic carbon in mg/l.\nGood standards for rivers and freshwater lakes\nGood standards for transitional and coastal waters2\nColumn 1\nColumn 2\nAnnual mean concentration (µg/l) of dissolved copper\nAnnual mean concentration (µg/l) of dissolved copper\n1(bioavailable)1\n3.76 µg/l dissolved, where DOC3 ≤ 1 mg/l\n3.76 +(2.677 × ((DOC/2) - 0.5)) µg/l dissolved, where DOC > 1 mg/l\nTable 28\nEnvironmental standards for cyanide\n1 The standards for cyanide specified in column 2 and column 4 must not be used for the purpose of classifying the ecological status or potential of bodies of surface water.\nGood standards for rivers and freshwater lakes\nGood standards for transitional and coastal waters\nColumn 1\nColumn 21\nColumn 3\nColumn 41\nAnnual mean concentration (µg/l) of ‘free’ cyanide (HCN and CN)\n95-percentile concentration (µg/l) of ‘free’cyanide (HCN and CN)\nAnnual mean concentration (µg/l) of hydrogen cyanide\n95-percentile concentration (µg/l) of hydrogen cyanide\n1\n5\n1\n5\nTable 29\nEnvironmental standards for cypermethrin\nGood standards for rivers and freshwater lakes\nGood standards for transitional and coastal waters\nColumn 1\nColumn 2\nColumn 3\nColumn 4\nAnnual mean (ng/l)\n0.1\nAnnual mean (ng/l)\n0.1\n95-percentile (ng/l)\n0.4\n95-percentile (ng/l)\n0.41\nTable 30\nEnvironmental standards for diazinon\nGood standards for rivers and freshwater lakes\nGood standards for transitional and coastal waters\nColumn 1\nColumn 2\nColumn 3\nColumn 4\nAnnual mean (µg/l)\n95-percentile (µg/l)\nAnnual mean (µg/l)\n95-percentile (µg/l)\n0.01\n0.02\n0.01\n0.26\nTable 31\nEnvironmental standards for dimethoate\nGood standards for rivers and freshwater lakes\nGood standards for transitional and coastal waters\nColumn 1\nColumn 2\nColumn 3\nColumn 4\nAnnual mean (µg/l)\n95-percentile (µg/l)\nAnnual mean (µg/l)\n95-percentile (µg/l)\n0.48\n4.0\n0.48\n4.0\nTable 32\nEnvironmental standards for glyhosate\nGood standards for rivers and freshwater lakes\nGood standards for transitional and coastal waters\nColumn 1\nColumn 2\nColumn 3\nColumn 4\nAnnual mean (µg/l)\n95-percentile (µg/l)\nAnnual mean (µg/l)\n95-percentile (µg/l)\n196\n398\n196\n398\nTable 33\nEnvironmental standards for iron\nGood standard for rivers and freshwater lakes\nGood standard for transitional and coastal waters\nColumn 1\nColumn 2\nAnnual mean concentration (mg/l) of dissolved iron\nAnnual mean concentration (mg/l) of dissolved iron\n1\n1\nTable 34\nEnvironmental standards for linuron\nGood standards for rivers and freshwater lakes\nGood standards for transitional and coastal waters\nColumn 1\nColumn 2\nColumn 3\nColumn 4\nAnnual mean (µg/l)\n95-percentile (µg/l)\nAnnual mean (µg/l)\n95-percentile (µg/l)\n0.5\n0.9\n0.5\n0.9\nTable 35\nEnvironmental standards for manganese\n1 bioavailable means the fraction of the dissolved concentration of manganese likely to result in toxic effects as determined in accordance with the Metal Bioavailability Assessment Tool for manganese.\nGood standard for rivers and freshwater lakes\nAnnual mean (µg/l) bioavailable\n1231\nTable 36\nEnvironmental standards for mecoprop\nGood standards for rivers and freshwater lakes\nGood standards for transitional and coastal waters\nColumn 1\nColumn 2\nColumn 3\nColumn 4\nAnnual mean (µg/l)\n95-percentile (µg/l)\nAnnual mean (µg/l)\n95-percentile (µg/l)\n18\n187\n18\n187\nTable 37\nEnvironmental standards for methiocarb\nGood standards for rivers and freshwater lakes\nColumn 1\nColumn 2\nAnnual mean (µg/l)\n95-percentile (µg/l)\n0.01\n0.77\nTable 38\nEnvironmental standards for pendimethalin\nGood standards for rivers and freshwater lakes\nColumn 1\nColumn 2\nAnnual mean (µg/l)\n95-percentile (µg/l)\n0.3\n0.58\nTable 39\nEnvironmental standards for permethrin\nGood standard for rivers and freshwater lakes\nGood standard for transitional and coastal waters\nColumn 1\nColumn 2\nColumn 3\nColumn 4\nAnnual mean (µg/l)\n95-percentile (µg/l)\nAnnual mean (µg/l)\n95-percentile (µg/l)\n0.001\n0.01\n0.0002\n0.001\nTable 40\nEnvironmental standards for phenol\nGood standards for rivers and freshwater lakes\nGood standards for transitional and coastal waters\nColumn 1\nColumn 2\nColumn 3\nColumn 4\nAnnual mean (µg/l)\n95-percentile (µg/l)\nAnnual mean (µg/l)\n95-percentile (µg/l)\n7.7\n46\n7.7\n46\nTable 41\nEnvironmental standards for tetrachloroethane (TCE)\nGood standards for rivers and freshwater lakes\nColumn 1\nColumn 2\nAnnual mean (µg/l)\n95-percentile (µg/l)\n140\n1848\nTable 42\nEnvironmental standards for toluene\nGood standards for rivers and freshwater lakes\nGood standards for transitional and coastal waters\nColumn 1\nColumn 2\nColumn 3\nColumn 4\nAnnual mean (µg/l)\n95-percentile (µg/l)\nAnnual mean (µg/l)\n95-percentile (µg/l)\n74\n380\n74\n370\nTable 43\nEnvironmental standards for triclosan\nGood standards for rivers and freshwater lakes\nGood standards for transitional and coastal waters\nColumn 1\nColumn 2\nColumn 3\nColumn 4\nAnnual mean (µg/l)\n95-percentile (µg/l)\nAnnual mean (µg/l)\n95-percentile (µg/l)\n0.1\n0.28\n0.1\n0.28\nTable 44\nEnvironmental standards for un-ionised ammonia as nitrogen\nGood standard for rivers and freshwater lakes\nGood standard for transitional and coastal waters\nAnnual mean (µg/l)\nAnnual mean (µg/l)\nNot applicable\n21\nTable 45\nEnvironmental standards for zinc\n1 bioavailable means the fraction of the dissolved concentration of zinc likely to result in toxic effects as determined using the Metal Bioavailability Assessment Tool (also referred to as a PNEC Estimator) for zinc.\n2 Ambient Background Concentration is an estimate of background levels of zinc based on a low percentile of monitoring data. A figure of 1 µg/l has been estimated for freshwaters in Northern Ireland.\nGood standards for rivers and freshwater lakes\nGood standards for transitional and coastal waters\nColumn 1\nColumn 2\nAnnual mean\nAnnual mean\n10.9 bioavailable1 plus Ambient Background Concentration2 (µg/l) dissolved\n6.8 dissolved plus Ambient Background Concentration (µg/l)\nEnvironmental Standards for Priority Substances and other Substances\nTable 46\nEnvironmental quality standards for priority substances and other substances for which standards have been set at EU-level\n1 This parameter is the Environmental Quality Standard expressed as an annual average value (AA-EQS). Unless otherwise specified, it applies to the total concentrations of all isomers of the pollutant concerned.\n2 This parameter is the Environmental Quality Standard expressed as a maximum allowable concentration (MAC-EQS). Where the MAC-EQS are marked as “not applicable”, the AA-EQS values are considered protective against short-term pollution peaks in continuous discharges since they are significantly lower than the values derived on the basis of acute toxicity.\n3 For the group of priority substances covered by brominated diphenylethers listed in Decision 2455/2001/EC, an EQS is established only for congener numbers 28, 47, 99, 100, 153 and 154.\n4 For cadmium and its compounds the EQS values vary dependent upon the hardness of the water as specified in five class categories (class 1: <40mg CaCO3/l, class 2: 40 to <50mg CaCO3/l, class 3: 50 to <100mg CaCO3/l, class 4: 100 to <200mg CaCO3/l and class 5: ≥200mg CaCO3/l).\n5 DDT total comprises the sum of the isomers 1,1,1-trichloro-2,2 bis (p-chlorophenyl) ethane (CAS number 50-29-3; EU number 200-024-3); 1,1,1-trichloro-2 (o-chlorophenyl)-2-(p-chlorophenyl) ethane (CAS number 789-02-6; EU number 212-332-5); 1,1-dichloro-2,2 bis (p-chlorophenyl) ethylene (CAS number 72-55-9; EU number 200-784-6); and 1,1-dichloro-2,2 bis (p-chlorophenyl) ethane (CAS number 72-54-8; EU number 200-783-0).\n6 If the Department does not apply standards for biota it shall introduce stricter standards for water in order to achieve the same level of protection as the standards for biota set out in regulation 4. The Department shall notify the European Commission of the reasons and basis for using this approach, the alternative standards used, the data and the methodology by which the alternative standards were derived and the categories of surface water to which they would apply.\nName of substance\nChemical Abstracts Service number\nAll rivers and lakes\nAll transitional and coastal waters\nGood\nGood\nAnnual mean1 (AA-EQS) (µg/l)\nMaximum allowable concentration2 (MAC-EQS) (µg/l)\nAnnual mean1 (AA-EQS) (µg/l)\nMaximum allowable concentration2 (MAC-EQS) (µg/l)\nAlachlor\n15972-60-8\n0.3\n0.7\n0.3\n0.7\nAnthracene\n120-12-7\n0.1\n0.4\n0.1\n0.4\nAtrazine\n1912-24-9\n0.6\n2.0\n0.6\n2.0\nBenzene\n71-43-2\n10\n50\n8\n50\nBrominated diphenylether3\n32534-81-9\n0.0005\nnot applicable\n0.0002\nnot applicable\nCadmium and its compounds (depending on water hardness classes)4\n7440-43-9\n≤ 0.08\n(class 1)\n≤ 0.45\n(class 1)\n0.2\n≤ 0.45\n(class 1)\n0.08\n(class 2)\n0.45\n(class 2)\n0.45\n(class 2)\n0.09\n(class 3)\n0.6\n(class 3)\n0.6\n(class 3)\n0.15\n(class 4)\n0.9\n(class 4)\n0.9\n(class 4)\n0.25\n(class 5)\n1.5\n(class 5)\n1.5\n(class 5)\nCarbon-tetrachloride\n56-23-5\n12\nnot applicable\n12\nnot applicable\nC10-13 Chloroalkanes\n85535-84-8\n0.4\n1.4\n0.4\n1.4\nChlorfenvinphos\n470-90-6\n0.1\n0.3\n0.1\n0.3\nChlorpyrifos (Chlorpyrifos-ethyl)\n2921-88-2\n0.03\n0.1\n0.03\n0.1\nCyclodiene pesticides:\nAldrin\n309-00-2\nΣ=0.01\nnot applicable\nΣ=0.005\nnot applicable\nDieldrin\n60-57-1\nEndrin\n72-20-8\nIsodrin\n465-73-6\nDDT total5\nnot applicable\n0.025\nnot applicable\n0.025\nnot applicable\nPara-para-DDT\n50-29-3\n0.01\nnot applicable\n0.01\nnot applicable\n1,2-Dichloroethane\n107-06-2\n10\nnot applicable\n10\nnot applicable\nDichloromethane\n75-09-2\n20\nnot applicable\n20\nnot applicable\nDi(2-ethylhexyl)-phthalate (DEHP)\n117-81-7\n1.3\nnot applicable\n1.3\nnot applicable\nDiuron\n330-54-1\n0.2\n1.8\n0.2\n1.8\nEndosulfan\n115-29-7\n0.005\n0.01\n0.0005\n0.004\nFluoranthene\n206-44-0\n0.1\n1\n0.1\n1\nHexachloro-benzene\n118-74-1\n0.016\n0.05\n0.016\n0.05\nHexachloro-butadiene\n87-68-3\n0.16\n0.6\n0.16\n0.6\nHexachloro-cyclohexane\n608-73-1\n0.02\n0.04\n0.002\n0.02\nIsoproturon\n34123-59-6\n0.3\n1.0\n0.3\n1.0\nLead and its compounds\n7439-92-1\n7.2\nnot applicable\n7.2\nnot applicable\nMercury and its compounds\n7439-97-6\n0.056\n0.07\n0.056\n0.07\nNaphthalene\n91-20-3\n2.4\nnot applicable\n1.2\nnot applicable\nNickel and its compounds\n7440-02-0\n20\nnot applicable\n20\nnot applicable\nNonylphenol (4-Nonylphenol)\n104-40-5\n0.3\n2.0\n0.3\n2.0\nOctylphenol ((4-(1,1',3,3'-tetramethylbutyl)-phenol))\n140-66-9\n0.1\nnot applicable\n0.01\nnot applicable\nPentachloro-benzene\n608-93-5\n0.007\nnot applicable\n0.0007\nnot applicable\nPentachloro-phenol\n87-86-5\n0.4\n1\n0.4\n1\nBenzo(a)pyrene\n50-32-8\n0.05\n0.1\n0.05\n0.1\nBenzo(b)fluor-anthene\n205-99-2\nΣ=0.03\nnot applicable\nΣ=0.03\nnot applicable\nBenzo(k)fluor-anthene\n207-08-9\nBenzo(g,h,i)-perylene\n191-24-2\nΣ=0.002\nnot applicable\nΣ=0.002\nnot applicable\nIndeno(1,2,3-cd)-pyrene\n193-39-5\nSimazine\n122-34-9\n1\n4\n1\n4\nTetrachloro-ethylene\n127-18-4\n10\nnot applicable\n10\nnot applicable\nTrichloro-ethylene\n79-01-6\n10\nnot applicable\n10\nnot applicable\nTributyltin compounds (Tributhyltin-cation)\n36643-28-4\n0.0002\n0.0015\n0.0002\n0.0015\nTrichloro-benzenes\n12002-48-1\n0.4\nnot applicable\n0.4\nnot applicable\nTrichloro-methane\n67-66-3\n2.5\nnot applicable\n2.5\nnot applicable\nTrifluralin\n1582-09-8\n0.03\nnot applicable\n0.03\nnot applicable\n. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\nPART 3\nBoundary values for biological quality elements\nBoundary values for aquatic plants and animals in rivers\n1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\n2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\n3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\n4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\nBoundary values for aquatic plants and animals in lakes\n5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\n6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\n7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\n8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\n9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\nBoundary values for aquatic plants and animals in transitional and coastal waters\n10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\n11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\n12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\n13 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\n14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\nPART 4\nIntermittent Discharge Standards\n. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .”", "extent": null, "status": "repealed", "version": "current", "annotations": [ { "type": "F", "label": "F1", "text": "Regulations revoked (23.10.2015) by The Water Framework Directive (Classification, Priority Substances and Shellfish Waters) Regulations (Northern Ireland) 2015 (S.R. 2015/351), regs. 1, 29" } ], "outstanding_effects": [], "provenance": { "source": "legislation.gov.uk", "source_url": "https://www.legislation.gov.uk/nisr/2015/45/schedule/1", "retrieved_at": "2026-10-29T01:03:57.114333+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." }