“SCHEDULE 1
PART 1
Criteria for identifying the types of river, lake or transitional water to which the environmental standards specified in Part 2 of this Schedule apply
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PART 2
Environmental Standards
Environmental standards for river water quality
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Environmental standards for river flows
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Environmental standards for lake water quality
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Environmental standards for protection of inland lake water levels
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Environmental standards for transitional and coastal water quality
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Environmental standards for specific pollutants
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Environmental Standards for River Water Quality
Table 1
Standards for dissolved oxygen in rivers
¹ Where a lowland, high alkalinity river is a salmonid river the standards for the upland, low alkalinity type will apply.
Dissolved oxygen (percent saturation)
(10-percentile)
Column 1 Column 2 Column 3 Column 4 Column 5 Column 6
Type¹ High Good Moderate Poor Bad
Upland and low alkalinity 80 75 64 50 < 50
Lowland and high alkalinity 70 60 54 45 < 45
Table 2
Standards for ammonia in rivers
¹ 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.
Total ammonia¹(mg/l)
(90-percentile)
Column 1 Column 2 Column 3 Column 4 Column 5 Column 6
Type High Good Moderate Poor Bad
Upland and low alkalinity 0.2 0.3 0.75 1.1 > 1.1
Lowland and high alkalinity 0.3 0.6 1.1 2.5 > 2.5
Table 3
Standards for Biochemical Oxygen Demand in rivers
¹ The standard for Biochemical Oxygen Demand shall be used when deciding action to meet the standard for dissolved oxygen.
² Where a lowland, high alkalinity river is a salmonid river the standards for the upland, low alkalinity type will apply.
Biochemical oxygen demand (mg/l)¹
(90-percentile)
Column 1 Column 2 Column 3 Column 4 Column 5 Column 6
Type² High Good Moderate Poor Bad
Upland and low alkalinity 3 4 6 7.5 > 7.5
Lowland and high alkalinity 4 5 6.5 9 > 9
Table 4
Standards for temperature in rivers
Temperature (◦C) as an annual 98th percentile standard
Column 1 Column 2 Column 3 Column 4 Column 5
Type High Good Moderate Poor
Salmonid 20 23 28 30
Cyprinid 25 28 30 32
Table 5
High environmental standards for river flows
¹ ‘Q’ is the mean daily flow for a specified period of time
² ‘Qx’ is the Q that is expected to be exceeded by ‘x’ percent for a specified period of time
Permitted abstraction per day as a percentage of the natural mean daily flow(Q)¹
High
Column 1 Column 2 Column 3
Maximum permitted % abstraction at Q exceeding Q₉₅² Maximum permitted % abstraction at Q not exceeding Q₉₅
A1, A2 (downstream), A2 (headwaters), B1, B2, C2, D2 10 5
Table 6
Good environmental standards for river flows
Permitted abstraction per day as a percentage of the natural mean daily flow(Q)
Good
Column 1 Column 2 Column 3 Column 4 Column 5
River type Maximum % abstraction at Q exceeding Q₆₀ Maximum % abstraction at Q exceeding Q₇₀ Maximum % abstraction at Q exceeding Q₉₅ Maximum % abstraction at Q not exceeding Q₉₅
A1 35 30 25 20
A2 (downstream), B1, B2 30 25 20 15
A2 (headwaters), C2, D2 25 20 15 10
Table 7
Moderate environmental standards for river flows
¹ incremental increase in allowable take at flows <Q₆₀ to ≥ Q₉₀
Permitted abstraction per day as a percentage of the natural mean daily flow(Q)
Moderate
Column 1 Column 2 Column 3 Column 4 Column 5
River type Maximum % abstraction at Q exceeding Q₆₀ Maximum % abstraction at Q exceeding Q₉₀ Maximum % abstraction at Q exceeding Q₉₅ Maximum % abstraction at Q not exceeding Q₉₅
A1 70 50-70¹ 50 45
A2 (downstream), B1, B2, 70 45-70¹ 45 40
A2 (headwaters), C2, D2 70 40-70¹ 40 35
Table 8
Poor environmental standards for river flows
Permitted abstraction per day as a percentage of the natural mean daily flow(Q)
Poor
Column 1 Column 2 Column 3 Column 4 Column 5
River type Maximum % abstraction at Q exceeding Q₆₀ Maximum % abstraction at Q exceeding Q₉₀ Maximum % abstraction at Q exceeding Q₉₅ Maximum % abstraction at Q not exceeding Q₉₅
A1 Q_x less 25% of Q₉₀ Q_x less 25% of Q₉₀ 75 70
A2 (downstream), B1, B2, Q_x less 30% of Q₉₀ Q_x less 30% of Q₉₀ 70 65
A2 (headwaters), C2, D2 Q_x less 35% of Q₉₀ Q_x less 35% of Q₉₀ 65 60
Environmental Standards for Lake Water Quality
Table 9
Standards for dissolved oxygen in lakes
Status Mean in July – August (mg/l)
Salmonid Cyprinid
High 9 8
Good 7 6
Moderate 4 4
Poor 1 1
Bad < 1 < 1
Table 10
Salinity Standards for lakes with no natural saline influence
Status Proposed Boundary
Annual Mean (micro Siemens per centimetre)
Good 1000
Table 11
Total phosphorus standards for lakes
Annual mean concentration of total phosphorous (µg/l)
Column 1 Column 2 Column 3 Column 4 Column 5
High Good Moderate Poor Bad
R ÷ H; or 5, whichever is the larger value R ÷ G; or 8, whichever is the larger value (R ÷ G) ÷ 0.5 (R ÷ G) ÷ 0.25 > (R ÷ G) ÷ 0.25
Table 12
Type-specific total phosphorus standards for lakes where the standards specified in Table 11 above do not apply
Annual mean concentration of total phosphorus (µg/l)
Column 1 Column 2 Column 3 Column 4 Column 5 Column 6
Geological and depth category High Good Moderate Poor Bad
High alkalinity; shallow 16 23 46 92 > 92
High alkalinity; very shallow 23 31 62 124 > 124
Moderate alkalinity; deep 8 12 24 48 > 48
Moderate alkalinity; shallow 11 16 32 64 > 64
Moderate alkalinity; very shallow 15 22 44 88 > 88
Low alkalinity; deep 5 8 16 32 > 32
Low alkalinity; shallow 7 10 20 40 > 40
Low alkalinity; very shallow 9 14 28 56 > 56
Marl; shallow 9 20 40 80 > 80
Marl; very shallow 10 24 48 96 > 96
Table 13
Environmental standards for lake water levels
¹ The reference conditions lake surface area means the natural lake surface area in the absence of any abstractions, discharges or other man-made influences
Daily maximum % reduction in the habitable zone lake surface area for 99% of the days in any year
Column 1 Column 2 Column 3 Column 4
High Good Moderate Poor
1 5 10 20
The habitable zone lake surface is dependent on whether the lake is considered to have the geological sub-type “Peat” or “Non-Peat”.
The 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.
In 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.
Environmental Standards for Transitional and Coastal Water Quality
Table 14
Dissolved oxygen standards for transitional and coastal waters with salinities normalised to 35
Dissolved oxygen concentrations (mg/l) as 5-percentile values
High 5.7
Good 4.0
Moderate 2.4
Poor 1.6
Bad <1.6
Table 15
Dissolved oxygen standards for transitional and coastal waters with salinities <35
Dissolved oxygen concentrations (mg/l) as 5-percentile values
High ≥5.7
Good ≥4.0 and <5.7
Moderate ≥2.4 and <4.0
Poor ≥1.6 and <2.4
Bad <1.6
Table 16
Dissolved 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.
Mean dissolved inorganic nitrogen concentration (micromoles per litre) during the period 1^st December to 28^th February
High 12
Good 18
Moderate 30
Poor 40.5
Bad >40.5
Environmental Standards for Specific Pollutants
Table 17
Environmental standards for 2,4-Dichlorophenoxyacetic acid (2,4-D)
¹ 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.
Good standards for rivers and freshwater lakes Good standards for transitional and coastal waters
Column 1 Column 2¹ Column 3 Column 4¹
Annual mean (µg/l) 95-percentile (µg/l) Annual mean (µg/l) 95-percentile (µg/l)
0.3 1.3 0.3 1.3
Table 18
Environmental standards for 2,4-Dichlorophenol
Good standard for rivers and freshwater lakes Good standard for transitional and coastal waters
Column 1 Column 2 Column 3 Column 4
Annual mean (µg/l) 95-percentile (µg/l) Annual mean (µg/l) 95-percentile (µg/l)
4.2 140 0.42 6
Table 19
Environmental standards for 3,4-Dichloroaniline
Good standard for rivers and freshwater lakes Good standard for transitional and coastal waters
Column 1 Column 2 Column 3 Column 4
Annual mean (µg/l) 95-percentile (µg/l) Annual mean (µg/l) 95-percentile (µg/l)
0.2 5.4 0.2 5.4
Table 20
Environmental standards for arsenic (dissolved)
¹ 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
Good standard for rivers and freshwater lakes Good standard for transitional and coastal waters
Column 1¹ Column 2¹
Annual mean (µg/l) Annual mean (µg/l)
50 25
Table 21
Environmental standards for benzyl butyl phthalate
Good standard for rivers and freshwater lakes
Good standard for transitional and coastal waters
Column 1 Column 2 Column 1 Column 2
Annual mean (µg/l) 95-percentile (µg/l) Annual mean (µg/l) 95-percentile (µg/l)
7.5 51 0.75 10
Table 22
Environmental standards for carbendazim
Good standards for rivers and freshwater lakes
Column 1 Column 2
Annual mean (µg/l) 95-percentile (µg/l)
0.15 0.7
Table 23
Environmental standards for chlorine
¹ 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.
² The term “total residual oxidants” refers to the sum of all oxidising agents existing in water, expressed as available chlorine.
Good standards for rivers and freshwater lakes Good standard for transitional and coastal waters
Column 1 Column 2¹ Column 3¹
Annual mean concentration (µg/l) of total available chlorine 95-percentile concentration (µg/l) of total available chlorine 95-percentile concentration (µg/l) of total residual oxidant²
2 5 10
Table 24
Environmental standards for chlorothalonil
Good standards for rivers and freshwater lakes
Column 1 Column 2
Annual mean (µg/l) 95-percentile (µg/l)
0.035 1.2
Table 25
Environmental standards for chromium VI
¹ 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.
Good standard for rivers and freshwater lakes Good standards for transitional and coastal waters
Column 1 Column 2 Column 3¹
Annual mean concentration (µg/l) of dissolved chromium VI Annual mean concentration (µg/l) of dissolved chromium VI 95-percentile concentration (µg/l) of dissolved chromium VI
3.4 0.6 32
Table 26
Environmental standards for chromium III
¹ 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
Good standards for rivers and freshwater lakes
Column 1 Column 2¹
Annual mean concentration (µg/l) of dissolved chromium III 95-percentile concentration (µg/l) of dissolved chromium III
4.7 32
Table 27
Environmental standards for copper
¹ 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.
² 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.
³ “DOC” means the annual mean concentration of dissolved organic carbon in mg/l.
Good standards for rivers and freshwater lakes Good standards for transitional and coastal waters²
Column 1 Column 2
Annual mean concentration (µg/l) of dissolved copper Annual mean concentration (µg/l) of dissolved copper
1(bioavailable)¹ 3.76 µg/l dissolved, where DOC³ ≤ 1 mg/l
3.76 +(2.677 × ((DOC/2) - 0.5)) µg/l dissolved, where DOC > 1 mg/l
Table 28
Environmental standards for cyanide
¹ 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.
Good standards for rivers and freshwater lakes Good standards for transitional and coastal waters
Column 1 Column 2¹ Column 3 Column 4¹
Annual mean concentration (µg/l) of ‘free’ cyanide (HCN and CN) 95-percentile concentration (µg/l) of ‘free’cyanide (HCN and CN) Annual mean concentration (µg/l) of hydrogen cyanide 95-percentile concentration (µg/l) of hydrogen cyanide
1 5 1 5
Table 29
Environmental standards for cypermethrin
Good standards for rivers and freshwater lakes Good standards for transitional and coastal waters
Column 1 Column 2 Column 3 Column 4
Annual mean (ng/l) 0.1 Annual mean (ng/l) 0.1
95-percentile (ng/l) 0.4 95-percentile (ng/l) 0.41
Table 30
Environmental standards for diazinon
Good standards for rivers and freshwater lakes Good standards for transitional and coastal waters
Column 1 Column 2 Column 3 Column 4
Annual mean (µg/l) 95-percentile (µg/l) Annual mean (µg/l) 95-percentile (µg/l)
0.01 0.02 0.01 0.26
Table 31
Environmental standards for dimethoate
Good standards for rivers and freshwater lakes Good standards for transitional and coastal waters
Column 1 Column 2 Column 3 Column 4
Annual mean (µg/l) 95-percentile (µg/l) Annual mean (µg/l) 95-percentile (µg/l)
0.48 4.0 0.48 4.0
Table 32
Environmental standards for glyhosate
Good standards for rivers and freshwater lakes Good standards for transitional and coastal waters
Column 1 Column 2 Column 3 Column 4
Annual mean (µg/l) 95-percentile (µg/l) Annual mean (µg/l) 95-percentile (µg/l)
196 398 196 398
Table 33
Environmental standards for iron
Good standard for rivers and freshwater lakes Good standard for transitional and coastal waters
Column 1 Column 2
Annual mean concentration (mg/l) of dissolved iron Annual mean concentration (mg/l) of dissolved iron
1 1
Table 34
Environmental standards for linuron
Good standards for rivers and freshwater lakes Good standards for transitional and coastal waters
Column 1 Column 2 Column 3 Column 4
Annual mean (µg/l) 95-percentile (µg/l) Annual mean (µg/l) 95-percentile (µg/l)
0.5 0.9 0.5 0.9
Table 35
Environmental standards for manganese
¹ 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.
Good standard for rivers and freshwater lakes
Annual mean (µg/l) bioavailable
123¹
Table 36
Environmental standards for mecoprop
Good standards for rivers and freshwater lakes Good standards for transitional and coastal waters
Column 1 Column 2 Column 3 Column 4
Annual mean (µg/l) 95-percentile (µg/l) Annual mean (µg/l) 95-percentile (µg/l)
18 187 18 187
Table 37
Environmental standards for methiocarb
Good standards for rivers and freshwater lakes
Column 1 Column 2
Annual mean (µg/l) 95-percentile (µg/l)
0.01 0.77
Table 38
Environmental standards for pendimethalin
Good standards for rivers and freshwater lakes
Column 1 Column 2
Annual mean (µg/l) 95-percentile (µg/l)
0.3 0.58
Table 39
Environmental standards for permethrin
Good standard for rivers and freshwater lakes Good standard for transitional and coastal waters
Column 1 Column 2 Column 3 Column 4
Annual mean (µg/l) 95-percentile (µg/l) Annual mean (µg/l) 95-percentile (µg/l)
0.001 0.01 0.0002 0.001
Table 40
Environmental standards for phenol
Good standards for rivers and freshwater lakes Good standards for transitional and coastal waters
Column 1 Column 2 Column 3 Column 4
Annual mean (µg/l) 95-percentile (µg/l) Annual mean (µg/l) 95-percentile (µg/l)
7.7 46 7.7 46
Table 41
Environmental standards for tetrachloroethane (TCE)
Good standards for rivers and freshwater lakes
Column 1 Column 2
Annual mean (µg/l) 95-percentile (µg/l)
140 1848
Table 42
Environmental standards for toluene
Good standards for rivers and freshwater lakes Good standards for transitional and coastal waters
Column 1 Column 2 Column 3 Column 4
Annual mean (µg/l) 95-percentile (µg/l) Annual mean (µg/l) 95-percentile (µg/l)
74 380 74 370
Table 43
Environmental standards for triclosan
Good standards for rivers and freshwater lakes Good standards for transitional and coastal waters
Column 1 Column 2 Column 3 Column 4
Annual mean (µg/l) 95-percentile (µg/l) Annual mean (µg/l) 95-percentile (µg/l)
0.1 0.28 0.1 0.28
Table 44
Environmental standards for un-ionised ammonia as nitrogen
Good standard for rivers and freshwater lakes Good standard for transitional and coastal waters
Annual mean (µg/l) Annual mean (µg/l)
Not applicable 21
Table 45
Environmental standards for zinc
¹ 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.
² 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.
Good standards for rivers and freshwater lakes Good standards for transitional and coastal waters
Column 1 Column 2
Annual mean Annual mean
10.9 bioavailable¹ plus Ambient Background Concentration² (µg/l) dissolved 6.8 dissolved plus Ambient Background Concentration (µg/l)
Environmental Standards for Priority Substances and other Substances
Table 46
Environmental quality standards for priority substances and other substances for which standards have been set at EU-level
¹ 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.
² 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.
³ 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.
⁴ 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).
⁵ 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).
⁶ 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.
Name of substance Chemical Abstracts Service number All rivers and lakes All transitional and coastal waters
Good Good
Annual mean¹ (AA-EQS) (µg/l) Maximum allowable concentration² (MAC-EQS) (µg/l) Annual mean¹ (AA-EQS) (µg/l) Maximum allowable concentration² (MAC-EQS) (µg/l)
Alachlor 15972-60-8 0.3 0.7 0.3 0.7
Anthracene 120-12-7 0.1 0.4 0.1 0.4
Atrazine 1912-24-9 0.6 2.0 0.6 2.0
Benzene 71-43-2 10 50 8 50
Brominated diphenylether³ 32534-81-9 0.0005 not applicable 0.0002 not applicable
Cadmium and its compounds (depending on water hardness classes)⁴ 7440-43-9
≤ 0.08
(class 1)
≤ 0.45
(class 1)
0.2
≤ 0.45
(class 1)
0.08
(class 2)
0.45
(class 2)
0.45
(class 2)
0.09
(class 3)
0.6
(class 3)
0.6
(class 3)
0.15
(class 4)
0.9
(class 4)
0.9
(class 4)
0.25
(class 5)
1.5
(class 5)
1.5
(class 5)
Carbon-tetrachloride 56-23-5 12 not applicable 12 not applicable
C10-13 Chloroalkanes 85535-84-8 0.4 1.4 0.4 1.4
Chlorfenvinphos 470-90-6 0.1 0.3 0.1 0.3
Chlorpyrifos (Chlorpyrifos-ethyl) 2921-88-2 0.03 0.1 0.03 0.1
Cyclodiene pesticides:
Aldrin 309-00-2 Σ=0.01 not applicable Σ=0.005 not applicable
Dieldrin 60-57-1
Endrin 72-20-8
Isodrin 465-73-6
DDT total⁵ not applicable 0.025 not applicable 0.025 not applicable
Para-para-DDT 50-29-3 0.01 not applicable 0.01 not applicable
1,2-Dichloroethane 107-06-2 10 not applicable 10 not applicable
Dichloromethane 75-09-2 20 not applicable 20 not applicable
Di(2-ethylhexyl)-phthalate (DEHP) 117-81-7 1.3 not applicable 1.3 not applicable
Diuron 330-54-1 0.2 1.8 0.2 1.8
Endosulfan 115-29-7 0.005 0.01 0.0005 0.004
Fluoranthene 206-44-0 0.1 1 0.1 1
Hexachloro-benzene 118-74-1 0.01⁶ 0.05 0.01⁶ 0.05
Hexachloro-butadiene 87-68-3 0.1⁶ 0.6 0.1⁶ 0.6
Hexachloro-cyclohexane 608-73-1 0.02 0.04 0.002 0.02
Isoproturon 34123-59-6 0.3 1.0 0.3 1.0
Lead and its compounds 7439-92-1 7.2 not applicable 7.2 not applicable
Mercury and its compounds 7439-97-6 0.05⁶ 0.07 0.05⁶ 0.07
Naphthalene 91-20-3 2.4 not applicable 1.2 not applicable
Nickel and its compounds 7440-02-0 20 not applicable 20 not applicable
Nonylphenol (4-Nonylphenol) 104-40-5 0.3 2.0 0.3 2.0
Octylphenol ((4-(1,1',3,3'-tetramethylbutyl)-phenol)) 140-66-9 0.1 not applicable 0.01 not applicable
Pentachloro-benzene 608-93-5 0.007 not applicable 0.0007 not applicable
Pentachloro-phenol 87-86-5 0.4 1 0.4 1
Benzo(a)pyrene 50-32-8 0.05 0.1 0.05 0.1
Benzo(b)fluor-anthene 205-99-2 Σ=0.03 not applicable Σ=0.03 not applicable
Benzo(k)fluor-anthene 207-08-9
Benzo(g,h,i)-perylene 191-24-2 Σ=0.002 not applicable Σ=0.002 not applicable
Indeno(1,2,3-cd)-pyrene 193-39-5
Simazine 122-34-9 1 4 1 4
Tetrachloro-ethylene 127-18-4 10 not applicable 10 not applicable
Trichloro-ethylene 79-01-6 10 not applicable 10 not applicable
Tributyltin compounds (Tributhyltin-cation) 36643-28-4 0.0002 0.0015 0.0002 0.0015
Trichloro-benzenes 12002-48-1 0.4 not applicable 0.4 not applicable
Trichloro-methane 67-66-3 2.5 not applicable 2.5 not applicable
Trifluralin 1582-09-8 0.03 not applicable 0.03 not applicable
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PART 3
Boundary values for biological quality elements
Boundary values for aquatic plants and animals in rivers
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Boundary values for aquatic plants and animals in lakes
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Boundary values for aquatic plants and animals in transitional and coastal waters
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14
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PART 4
Intermittent Discharge Standards
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .”

¹ Where a lowland, high alkalinity river is a salmonid river the standards for the upland, low alkalinity type will apply.
Dissolved oxygen (percent saturation)
(10-percentile)
Column 1	Column 2	Column 3	Column 4	Column 5	Column 6
Type¹	High	Good	Moderate	Poor	Bad
Upland and low alkalinity	80	75	64	50	< 50
Lowland and high alkalinity	70	60	54	45	< 45

¹ 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.
Total ammonia¹(mg/l)
(90-percentile)
Column 1	Column 2	Column 3	Column 4	Column 5	Column 6
Type	High	Good	Moderate	Poor	Bad
Upland and low alkalinity	0.2	0.3	0.75	1.1	> 1.1
Lowland and high alkalinity	0.3	0.6	1.1	2.5	> 2.5

¹ The standard for Biochemical Oxygen Demand shall be used when deciding action to meet the standard for dissolved oxygen.
² Where a lowland, high alkalinity river is a salmonid river the standards for the upland, low alkalinity type will apply.
Biochemical oxygen demand (mg/l)¹
(90-percentile)
Column 1	Column 2	Column 3	Column 4	Column 5	Column 6
Type²	High	Good	Moderate	Poor	Bad
Upland and low alkalinity	3	4	6	7.5	> 7.5
Lowland and high alkalinity	4	5	6.5	9	> 9

Temperature (◦C) as an annual 98th percentile standard
Column 1	Column 2	Column 3	Column 4	Column 5
Type	High	Good	Moderate	Poor
Salmonid	20	23	28	30
Cyprinid	25	28	30	32

¹ ‘Q’ is the mean daily flow for a specified period of time
² ‘Qx’ is the Q that is expected to be exceeded by ‘x’ percent for a specified period of time
Permitted abstraction per day as a percentage of the natural mean daily flow(Q)¹
High
Column 1	Column 2	Column 3
Maximum permitted % abstraction at Q exceeding Q₉₅²	Maximum permitted % abstraction at Q not exceeding Q₉₅
A1, A2 (downstream), A2 (headwaters), B1, B2, C2, D2	10	5

Permitted abstraction per day as a percentage of the natural mean daily flow(Q)
Good
Column 1	Column 2	Column 3	Column 4	Column 5
River type	Maximum % abstraction at Q exceeding Q₆₀	Maximum % abstraction at Q exceeding Q₇₀	Maximum % abstraction at Q exceeding Q₉₅	Maximum % abstraction at Q not exceeding Q₉₅
A1	35	30	25	20
A2 (downstream), B1, B2	30	25	20	15
A2 (headwaters), C2, D2	25	20	15	10

¹ incremental increase in allowable take at flows <Q₆₀ to ≥ Q₉₀
Permitted abstraction per day as a percentage of the natural mean daily flow(Q)
Moderate
Column 1	Column 2	Column 3	Column 4	Column 5
River type	Maximum % abstraction at Q exceeding Q₆₀	Maximum % abstraction at Q exceeding Q₉₀	Maximum % abstraction at Q exceeding Q₉₅	Maximum % abstraction at Q not exceeding Q₉₅
A1	70	50-70¹	50	45
A2 (downstream), B1, B2,	70	45-70¹	45	40
A2 (headwaters), C2, D2	70	40-70¹	40	35

Permitted abstraction per day as a percentage of the natural mean daily flow(Q)
Poor
Column 1	Column 2	Column 3	Column 4	Column 5
River type	Maximum % abstraction at Q exceeding Q₆₀	Maximum % abstraction at Q exceeding Q₉₀	Maximum % abstraction at Q exceeding Q₉₅	Maximum % abstraction at Q not exceeding Q₉₅
A1	Q_x less 25% of Q₉₀	Q_x less 25% of Q₉₀	75	70
A2 (downstream), B1, B2,	Q_x less 30% of Q₉₀	Q_x less 30% of Q₉₀	70	65
A2 (headwaters), C2, D2	Q_x less 35% of Q₉₀	Q_x less 35% of Q₉₀	65	60

Status	Mean in July – August (mg/l)
Salmonid	Cyprinid
High	9	8
Good	7	6
Moderate	4	4
Poor	1	1
Bad	< 1	< 1

Status	Proposed Boundary
Annual Mean (micro Siemens per centimetre)
Good	1000

Annual mean concentration of total phosphorous (µg/l)
Column 1	Column 2	Column 3	Column 4	Column 5
High	Good	Moderate	Poor	Bad
R ÷ H; or 5, whichever is the larger value	R ÷ G; or 8, whichever is the larger value	(R ÷ G) ÷ 0.5	(R ÷ G) ÷ 0.25	> (R ÷ G) ÷ 0.25

Annual mean concentration of total phosphorus (µg/l)
Column 1	Column 2	Column 3	Column 4	Column 5	Column 6
Geological and depth category	High	Good	Moderate	Poor	Bad
High alkalinity; shallow	16	23	46	92	> 92
High alkalinity; very shallow	23	31	62	124	> 124
Moderate alkalinity; deep	8	12	24	48	> 48
Moderate alkalinity; shallow	11	16	32	64	> 64
Moderate alkalinity; very shallow	15	22	44	88	> 88
Low alkalinity; deep	5	8	16	32	> 32
Low alkalinity; shallow	7	10	20	40	> 40
Low alkalinity; very shallow	9	14	28	56	> 56
Marl; shallow	9	20	40	80	> 80
Marl; very shallow	10	24	48	96	> 96

¹ The reference conditions lake surface area means the natural lake surface area in the absence of any abstractions, discharges or other man-made influences
Daily maximum % reduction in the habitable zone lake surface area for 99% of the days in any year
Column 1	Column 2	Column 3	Column 4
High	Good	Moderate	Poor
1	5	10	20
The habitable zone lake surface is dependent on whether the lake is considered to have the geological sub-type “Peat” or “Non-Peat”. The 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. In 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.

	Dissolved oxygen concentrations (mg/l) as 5-percentile values
High	5.7
Good	4.0
Moderate	2.4
Poor	1.6
Bad	<1.6

	Dissolved oxygen concentrations (mg/l) as 5-percentile values
High	≥5.7
Good	≥4.0 and <5.7
Moderate	≥2.4 and <4.0
Poor	≥1.6 and <2.4
Bad	<1.6

	Mean dissolved inorganic nitrogen concentration (micromoles per litre) during the period 1^st December to 28^th February
High	12
Good	18
Moderate	30
Poor	40.5
Bad	>40.5

¹ 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.
Good standards for rivers and freshwater lakes	Good standards for transitional and coastal waters
Column 1	Column 2¹	Column 3	Column 4¹
Annual mean (µg/l)	95-percentile (µg/l)	Annual mean (µg/l)	95-percentile (µg/l)
0.3	1.3	0.3	1.3

Good standard for rivers and freshwater lakes	Good standard for transitional and coastal waters
Column 1	Column 2	Column 3	Column 4
Annual mean (µg/l)	95-percentile (µg/l)	Annual mean (µg/l)	95-percentile (µg/l)
4.2	140	0.42	6

Good standard for rivers and freshwater lakes	Good standard for transitional and coastal waters
Column 1	Column 2	Column 3	Column 4
Annual mean (µg/l)	95-percentile (µg/l)	Annual mean (µg/l)	95-percentile (µg/l)
0.2	5.4	0.2	5.4

¹ 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
Good standard for rivers and freshwater lakes	Good standard for transitional and coastal waters
Column 1¹	Column 2¹
Annual mean (µg/l)	Annual mean (µg/l)
50	25

Good standard for rivers and freshwater lakes	Good standard for transitional and coastal waters
Column 1	Column 2	Column 1	Column 2
Annual mean (µg/l)	95-percentile (µg/l)	Annual mean (µg/l)	95-percentile (µg/l)
7.5	51	0.75	10

Good standards for rivers and freshwater lakes
Column 1	Column 2
Annual mean (µg/l)	95-percentile (µg/l)
0.15	0.7

¹ 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.
² The term “total residual oxidants” refers to the sum of all oxidising agents existing in water, expressed as available chlorine.
Good standards for rivers and freshwater lakes	Good standard for transitional and coastal waters
Column 1	Column 2¹	Column 3¹
Annual mean concentration (µg/l) of total available chlorine	95-percentile concentration (µg/l) of total available chlorine	95-percentile concentration (µg/l) of total residual oxidant²
2	5	10

Good standards for rivers and freshwater lakes
Column 1	Column 2
Annual mean (µg/l)	95-percentile (µg/l)
0.035	1.2

¹ 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.
Good standard for rivers and freshwater lakes	Good standards for transitional and coastal waters
Column 1	Column 2	Column 3¹
Annual mean concentration (µg/l) of dissolved chromium VI	Annual mean concentration (µg/l) of dissolved chromium VI	95-percentile concentration (µg/l) of dissolved chromium VI
3.4	0.6	32

¹ 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
Good standards for rivers and freshwater lakes
Column 1	Column 2¹
Annual mean concentration (µg/l) of dissolved chromium III	95-percentile concentration (µg/l) of dissolved chromium III
4.7	32

¹ 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.
² 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.
³ “DOC” means the annual mean concentration of dissolved organic carbon in mg/l.
Good standards for rivers and freshwater lakes	Good standards for transitional and coastal waters²
Column 1	Column 2
Annual mean concentration (µg/l) of dissolved copper	Annual mean concentration (µg/l) of dissolved copper
1(bioavailable)¹	3.76 µg/l dissolved, where DOC³ ≤ 1 mg/l
3.76 +(2.677 × ((DOC/2) - 0.5)) µg/l dissolved, where DOC > 1 mg/l

¹ 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.
Good standards for rivers and freshwater lakes	Good standards for transitional and coastal waters
Column 1	Column 2¹	Column 3	Column 4¹
Annual mean concentration (µg/l) of ‘free’ cyanide (HCN and CN)	95-percentile concentration (µg/l) of ‘free’cyanide (HCN and CN)	Annual mean concentration (µg/l) of hydrogen cyanide	95-percentile concentration (µg/l) of hydrogen cyanide
1	5	1	5

Good standards for rivers and freshwater lakes	Good standards for transitional and coastal waters
Column 1	Column 2	Column 3	Column 4
Annual mean (ng/l)	0.1	Annual mean (ng/l)	0.1
95-percentile (ng/l)	0.4	95-percentile (ng/l)	0.41

Good standards for rivers and freshwater lakes	Good standards for transitional and coastal waters
Column 1	Column 2	Column 3	Column 4
Annual mean (µg/l)	95-percentile (µg/l)	Annual mean (µg/l)	95-percentile (µg/l)
0.01	0.02	0.01	0.26

Good standards for rivers and freshwater lakes	Good standards for transitional and coastal waters
Column 1	Column 2	Column 3	Column 4
Annual mean (µg/l)	95-percentile (µg/l)	Annual mean (µg/l)	95-percentile (µg/l)
0.48	4.0	0.48	4.0

Good standards for rivers and freshwater lakes	Good standards for transitional and coastal waters
Column 1	Column 2	Column 3	Column 4
Annual mean (µg/l)	95-percentile (µg/l)	Annual mean (µg/l)	95-percentile (µg/l)
196	398	196	398

Good standard for rivers and freshwater lakes	Good standard for transitional and coastal waters
Column 1	Column 2
Annual mean concentration (mg/l) of dissolved iron	Annual mean concentration (mg/l) of dissolved iron
1	1

Good standards for rivers and freshwater lakes	Good standards for transitional and coastal waters
Column 1	Column 2	Column 3	Column 4
Annual mean (µg/l)	95-percentile (µg/l)	Annual mean (µg/l)	95-percentile (µg/l)
0.5	0.9	0.5	0.9

¹ 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.
Good standard for rivers and freshwater lakes
Annual mean (µg/l) bioavailable
123¹

Good standards for rivers and freshwater lakes	Good standards for transitional and coastal waters
Column 1	Column 2	Column 3	Column 4
Annual mean (µg/l)	95-percentile (µg/l)	Annual mean (µg/l)	95-percentile (µg/l)
18	187	18	187

Good standards for rivers and freshwater lakes
Column 1	Column 2
Annual mean (µg/l)	95-percentile (µg/l)
0.01	0.77

Good standards for rivers and freshwater lakes
Column 1	Column 2
Annual mean (µg/l)	95-percentile (µg/l)
0.3	0.58

Good standard for rivers and freshwater lakes	Good standard for transitional and coastal waters
Column 1	Column 2	Column 3	Column 4
Annual mean (µg/l)	95-percentile (µg/l)	Annual mean (µg/l)	95-percentile (µg/l)
0.001	0.01	0.0002	0.001

Good standards for rivers and freshwater lakes	Good standards for transitional and coastal waters
Column 1	Column 2	Column 3	Column 4
Annual mean (µg/l)	95-percentile (µg/l)	Annual mean (µg/l)	95-percentile (µg/l)
7.7	46	7.7	46

Good standards for rivers and freshwater lakes
Column 1	Column 2
Annual mean (µg/l)	95-percentile (µg/l)
140	1848

Good standards for rivers and freshwater lakes	Good standards for transitional and coastal waters
Column 1	Column 2	Column 3	Column 4
Annual mean (µg/l)	95-percentile (µg/l)	Annual mean (µg/l)	95-percentile (µg/l)
74	380	74	370

Good standards for rivers and freshwater lakes	Good standards for transitional and coastal waters
Column 1	Column 2	Column 3	Column 4
Annual mean (µg/l)	95-percentile (µg/l)	Annual mean (µg/l)	95-percentile (µg/l)
0.1	0.28	0.1	0.28

Good standard for rivers and freshwater lakes	Good standard for transitional and coastal waters
Annual mean (µg/l)	Annual mean (µg/l)
Not applicable	21

¹ 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.
² 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.
Good standards for rivers and freshwater lakes	Good standards for transitional and coastal waters
Column 1	Column 2
Annual mean	Annual mean
10.9 bioavailable¹ plus Ambient Background Concentration² (µg/l) dissolved	6.8 dissolved plus Ambient Background Concentration (µg/l)

¹ 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.
² 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.
³ 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.
⁴ 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).
⁵ 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).
⁶ 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.
Name of substance	Chemical Abstracts Service number	All rivers and lakes	All transitional and coastal waters
Good	Good
Annual mean¹ (AA-EQS) (µg/l)	Maximum allowable concentration² (MAC-EQS) (µg/l)	Annual mean¹ (AA-EQS) (µg/l)	Maximum allowable concentration² (MAC-EQS) (µg/l)
Alachlor	15972-60-8	0.3	0.7	0.3	0.7
Anthracene	120-12-7	0.1	0.4	0.1	0.4
Atrazine	1912-24-9	0.6	2.0	0.6	2.0
Benzene	71-43-2	10	50	8	50
Brominated diphenylether³	32534-81-9	0.0005	not applicable	0.0002	not applicable
Cadmium and its compounds (depending on water hardness classes)⁴	7440-43-9	≤ 0.08 (class 1)	≤ 0.45 (class 1)	0.2	≤ 0.45 (class 1)
0.08 (class 2)	0.45 (class 2)	0.45 (class 2)
0.09 (class 3)	0.6 (class 3)	0.6 (class 3)
0.15 (class 4)	0.9 (class 4)	0.9 (class 4)
0.25 (class 5)	1.5 (class 5)	1.5 (class 5)
Carbon-tetrachloride	56-23-5	12	not applicable	12	not applicable
C10-13 Chloroalkanes	85535-84-8	0.4	1.4	0.4	1.4
Chlorfenvinphos	470-90-6	0.1	0.3	0.1	0.3
Chlorpyrifos (Chlorpyrifos-ethyl)	2921-88-2	0.03	0.1	0.03	0.1
Cyclodiene pesticides:
Aldrin	309-00-2	Σ=0.01	not applicable	Σ=0.005	not applicable
Dieldrin	60-57-1
Endrin	72-20-8
Isodrin	465-73-6
DDT total⁵	not applicable	0.025	not applicable	0.025	not applicable
Para-para-DDT	50-29-3	0.01	not applicable	0.01	not applicable
1,2-Dichloroethane	107-06-2	10	not applicable	10	not applicable
Dichloromethane	75-09-2	20	not applicable	20	not applicable
Di(2-ethylhexyl)-phthalate (DEHP)	117-81-7	1.3	not applicable	1.3	not applicable
Diuron	330-54-1	0.2	1.8	0.2	1.8
Endosulfan	115-29-7	0.005	0.01	0.0005	0.004
Fluoranthene	206-44-0	0.1	1	0.1	1
Hexachloro-benzene	118-74-1	0.01⁶	0.05	0.01⁶	0.05
Hexachloro-butadiene	87-68-3	0.1⁶	0.6	0.1⁶	0.6
Hexachloro-cyclohexane	608-73-1	0.02	0.04	0.002	0.02
Isoproturon	34123-59-6	0.3	1.0	0.3	1.0
Lead and its compounds	7439-92-1	7.2	not applicable	7.2	not applicable
Mercury and its compounds	7439-97-6	0.05⁶	0.07	0.05⁶	0.07
Naphthalene	91-20-3	2.4	not applicable	1.2	not applicable
Nickel and its compounds	7440-02-0	20	not applicable	20	not applicable
Nonylphenol (4-Nonylphenol)	104-40-5	0.3	2.0	0.3	2.0
Octylphenol ((4-(1,1',3,3'-tetramethylbutyl)-phenol))	140-66-9	0.1	not applicable	0.01	not applicable
Pentachloro-benzene	608-93-5	0.007	not applicable	0.0007	not applicable
Pentachloro-phenol	87-86-5	0.4	1	0.4	1
Benzo(a)pyrene	50-32-8	0.05	0.1	0.05	0.1
Benzo(b)fluor-anthene	205-99-2	Σ=0.03	not applicable	Σ=0.03	not applicable
Benzo(k)fluor-anthene	207-08-9
Benzo(g,h,i)-perylene	191-24-2	Σ=0.002	not applicable	Σ=0.002	not applicable
Indeno(1,2,3-cd)-pyrene	193-39-5
Simazine	122-34-9	1	4	1	4
Tetrachloro-ethylene	127-18-4	10	not applicable	10	not applicable
Trichloro-ethylene	79-01-6	10	not applicable	10	not applicable
Tributyltin compounds (Tributhyltin-cation)	36643-28-4	0.0002	0.0015	0.0002	0.0015
Trichloro-benzenes	12002-48-1	0.4	not applicable	0.4	not applicable
Trichloro-methane	67-66-3	2.5	not applicable	2.5	not applicable
Trifluralin	1582-09-8	0.03	not applicable	0.03	not applicable

Schedule 2Schedule substituted for Schedule 2 to the Water Framework Directive (Priority Substances and Classification) Regulations (Northern Ireland) 2011F1

“SCHEDULE 2
PART 1
Determining Ecological Status of Surface Waters that are not designated Heavily Modified or Artificial
1
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PART 2
Determining Chemical Status of Surface Waters
1
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PART 3
Determining Ecological Potential of Heavily Modified and Artificial Water Bodies
1
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PART 4
Determining High Status for Morphological Elements
1
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PART 5
Determining Overall Status of Surface Water Bodies
1
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .”

Schedule 3Schedule to be substituted for Schedule 3 to the Water Framework Directive (Priority Substances and Classification) Regulations (Northern Ireland) 2011F1

“SCHEDULE 3
Determining Quantitative status of Groundwater
1
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .”

Schedule 4Schedule to be inserted after Schedule 4 to the Water Framework Directive (Priority Substances and Classification) Regulations (Northern Ireland) 2011F1

“SCHEDULE 5
PART 1
Shellfish Waters Standards
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PART 2
Microbial Guideline Value
Microbial Guideline Value
1
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Compliance with the microbial guideline value
2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Sampling and analysis
3
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .”

Explanatory note

F1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

The Water Framework Directive (Priority Substances and Classification) (Amendment) Regulations (Northern Ireland) 2015 (revoked)

Annotations to the whole text

Textual amendments

Contents