LegalizeThe Private Water Supplies Regulations (Northern Ireland) 2009
Made: 11th December 2009
Coming into operation: 18th January 2010
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PART 1 — Water Standards
Citation and commencement
1
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Interpretation
2
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Water Supplies to which these Regulations apply
3
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Exemptions
4
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Wholesomeness
5
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New installations
6
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Requirement to carry out a risk assessment
7
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PART 2 — Monitoring
Monitoring
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Large supplies and supplies to commercial or public premises
9
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Other private supplies
10
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Supplies to single private dwellings
11
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Sampling and analysis
12
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Maintenance of records
13
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Publication of information
14
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PART 3 — Action in The Event of Failure
Provision of information
15
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Investigation
16
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Procedure following investigation
17
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Authorisations of different standards
18
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Notices
19
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Appeals
20
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Powers of the Appeals Commission
21
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PART 4 — Penalties
Penalties
22
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PART 5 — Revocations
Revocations
23
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SCHEDULE 1 — Concentrations and Values
PART 1 — Wholesomeness
| Parameters | Maximum concentration or value | Units of Measurement |
|---|---|---|
| Escherichia coli (E. coli) | 0 | Number/100ml |
| Enterococci | 0 | Number/100ml |
| Parameters | Maximum concentration or value | Units of Measurement |
| --- | --- | --- |
| (1) 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. | (1) 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. | (1) 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. |
| (2) See also the nitrate-nitrite formula in regulation 5(c) | (2) See also the nitrate-nitrite formula in regulation 5(c) | (2) See also the nitrate-nitrite formula in regulation 5(c) |
| (3) For these purposes “Pesticides” means— organic insecticides, organic herbicides, organic fungicides, organic nematocides, organic acaricides, organic algicides, organic rodenticides, organic slimicides, related products (inter alia, growth regulators) And their relevant metabolites, degradation and reaction products. Only those pesticides which are likely to be present in a given supply need to be monitored. | (3) For these purposes “Pesticides” means— organic insecticides, organic herbicides, organic fungicides, organic nematocides, organic acaricides, organic algicides, organic rodenticides, organic slimicides, related products (inter alia, growth regulators) And their relevant metabolites, degradation and reaction products. Only those pesticides which are likely to be present in a given supply need to be monitored. | (3) For these purposes “Pesticides” means— organic insecticides, organic herbicides, organic fungicides, organic nematocides, organic acaricides, organic algicides, organic rodenticides, organic slimicides, related products (inter alia, growth regulators) And their relevant metabolites, degradation and reaction products. Only those pesticides which are likely to be present in a given supply need to be monitored. |
| (4) “Pesticides total” means the sum of the concentrations of the individual pesticides detected and quantified in the monitoring process. | (4) “Pesticides total” means the sum of the concentrations of the individual pesticides detected and quantified in the monitoring process. | (4) “Pesticides total” means the sum of the concentrations of the individual pesticides detected and quantified in the monitoring process. |
| (5) The specified compounds are: benzo(b)fluoranthene benzo(k)fluoranthene benzo(ghi)perylene indeno(1,2,3-cd)pyrene. The parametric value applies to the sum of the concentrations of the individual compounds detected and quantified in the monitoring process. | (5) The specified compounds are: benzo(b)fluoranthene benzo(k)fluoranthene benzo(ghi)perylene indeno(1,2,3-cd)pyrene. The parametric value applies to the sum of the concentrations of the individual compounds detected and quantified in the monitoring process. | (5) The specified compounds are: benzo(b)fluoranthene benzo(k)fluoranthene benzo(ghi)perylene indeno(1,2,3-cd)pyrene. The parametric value applies to the sum of the concentrations of the individual compounds detected and quantified in the monitoring process. |
| (6) The parametric value applies to the sum of the concentrations of the individual compounds detected and quantified in the monitoring process. | (6) The parametric value applies to the sum of the concentrations of the individual compounds detected and quantified in the monitoring process. | (6) The parametric value applies to the sum of the concentrations of the individual compounds detected and quantified in the monitoring process. |
| (7) The specified compounds are: chloroform bromoform dibromochloromethane bromodichloromethane The parametric value applies to the sum of the concentrations of the individual compounds detected and quantified in the monitoring process. | (7) The specified compounds are: chloroform bromoform dibromochloromethane bromodichloromethane The parametric value applies to the sum of the concentrations of the individual compounds detected and quantified in the monitoring process. | (7) The specified compounds are: chloroform bromoform dibromochloromethane bromodichloromethane The parametric value applies to the sum of the concentrations of the individual compounds detected and quantified in the monitoring process. |
| Acrylamide [^f01000] | 0.10 | μg/l |
| Antimony | 5.0 | μgSb/l |
| Arsenic | 10 | μgAs/l |
| Benzene | 1.0 | μg/l |
| Benzo(a)pyrene | 0.010 | μg/l |
| Boron | 1.0 | mgB/l |
| Bromate | 10 | μgBrO₃/l |
| Cadmium | 5.0 | μgCd/l |
| Chromium | 50 | μgCr/l |
| Copper | 2.0 | mgCu/l |
| Cyanide | 50 | μgCN/l |
| 1, 2 dichloroethane | 3.0 | μg/l |
| Epichlorohydrin [^f01000] | 0.10 | μg/l |
| Fluoride | 1.5 | mgF/l |
| Lead | (a) 25 until immediately before 25th December 2013 | μgPb/l |
| Lead | (b) 10, on and after 25th December 2013 | μgPb/l |
| Mercury | 1.0 | μgHg/l |
| Nickel | 20 | μgNi/l |
| Nitrate [^f01001] | 50 | mgNO₃/l |
| Nitrite | 0.5 | mgNO₂/l |
| Pesticides [^f01002] | ||
| Aldrin | 0.030 | μg/l |
| Dieldrin | 0.030 | μg/l |
| Heptachlor | 0.030 | μg/l |
| Heptachlor epoxide | 0.030 | μg/l |
| other pesticides | 0.10 | μg/l |
| Pesticides total [^f01014] | 0.50 | μg/l |
| Polycyclic aromatic hydrocarbons [^f01015] | 0.10 | μg/l |
| Selenium | 10 | μgSe/l |
| Tetrachloroethene and Trichloroethene [^f01021] | 10 | μg/l |
| Trihalomethanes: Total [^f01022] | 100 | μg/l |
| Vinyl chloride [^f01000] | 0.50 | μg/l |
| Parameters | Maximum concentration or value or state | Units of Measurement |
| --- | --- | --- |
| (1) Ex water treatment works only. (See also the nitrate-nitrite formula in regulation 5(c)) | (1) Ex water treatment works only. (See also the nitrate-nitrite formula in regulation 5(c)) | (1) Ex water treatment works only. (See also the nitrate-nitrite formula in regulation 5(c)) |
| Aluminium | 200 | μgAl/l |
| Colour | 20 | mg/l Pt/Co |
| Iron | 200 | μgFe/l |
| Manganese | 50 | μgMn/l |
| Nitrite [^f01028] | 0.10 | mgNO₂/l |
| Odour | Acceptable and no abnormal change | |
| Sodium | 200 | mgNa/l |
| Taste | Acceptable and no abnormal change | |
| Tetrachloromethane | 3 | μg/l |
| Turbidity | 4 | NTU |
PART 2 — Indicator Parameters
| Parameters | Maximum concentration or value or state (unless otherwise stated) | Units of measurement |
|---|---|---|
| (1)The water should not be aggressive. | (1)The water should not be aggressive. | (1)The water should not be aggressive. |
| (2)Excluding tritium, potassium-40, radon and radon decay products. | (2)Excluding tritium, potassium-40, radon and radon decay products. | (2)Excluding tritium, potassium-40, radon and radon decay products. |
| (3)Where treatment to reduce the level of radionuclides in water intended for human consumption has being taken, monitoring must be carried out under Schedule 3 Part 1 to ensure the continued efficacy of treatment. | (3)Where treatment to reduce the level of radionuclides in water intended for human consumption has being taken, monitoring must be carried out under Schedule 3 Part 1 to ensure the continued efficacy of treatment. | (3)Where treatment to reduce the level of radionuclides in water intended for human consumption has being taken, monitoring must be carried out under Schedule 3 Part 1 to ensure the continued efficacy of treatment. |
| (4)If the gross alpha activity exceeds 0.1Bq/l or the gross beta activity exceeds 1.0Bq/l analysis for specific radionuclides is required. | (4)If the gross alpha activity exceeds 0.1Bq/l or the gross beta activity exceeds 1.0Bq/l analysis for specific radionuclides is required. | (4)If the gross alpha activity exceeds 0.1Bq/l or the gross beta activity exceeds 1.0Bq/l analysis for specific radionuclides is required. |
| (5)Remedial action is deemed to be justified on radiological protection grounds, without further consideration, where radon concentrations exceed 1000Bq/l. | (5)Remedial action is deemed to be justified on radiological protection grounds, without further consideration, where radon concentrations exceed 1000Bq/l. | (5)Remedial action is deemed to be justified on radiological protection grounds, without further consideration, where radon concentrations exceed 1000Bq/l. |
| (6)If tritium concentration exceeds its parametric value an investigation (which may include analysis) of the presence of other artificial radionuclides must be carried out. | (6)If tritium concentration exceeds its parametric value an investigation (which may include analysis) of the presence of other artificial radionuclides must be carried out. | (6)If tritium concentration exceeds its parametric value an investigation (which may include analysis) of the presence of other artificial radionuclides must be carried out. |
| (7)Only in the case of surface water treatment where the parametric value should be strived for the water ex-treatment works. | (7)Only in the case of surface water treatment where the parametric value should be strived for the water ex-treatment works. | (7)Only in the case of surface water treatment where the parametric value should be strived for the water ex-treatment works. |
| Ammonium | 0.50 | mgNH₄/l |
| Chloride[^f01000] | 250 | mgCl/l |
| Clostridium perfringens(including spores) | 0 | Number/100ml |
| Coliform bacteria | 0 | Number/100ml |
| Colony counts | No abnormal changeNo abnormal change | Number/1ml at 22oCNumber/1ml at 37oC |
| Conductivity[^f01000] | 2,500 | µS/cm at 20oC |
| Hydrogen ion[^f01000] | 9.56.5 (minimum) | pH valuepH value |
| Sulphate[^f01000] | 250 | mgSO₄/l |
| Indicative dose (for radioactivity)[^f01001][^f01002][^f01003] | 0.10 | mSv/year |
| Radon (for radioactivity)[^f01002][^f01004] | 100 | Bq/1 |
| Total organic carbon(TOC) | No abnormal change | mgC/l |
| Tritium (for radioactivity)[^f01002][^f01005] | 100 | Bq/l |
| Turbidity[^f01006] | 1 | NTU |
SCHEDULE 2 — Requirements for Risk Assessment
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5
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SCHEDULE 3 — Monitoring
PART 1 — Check Monitoring
Sampling
1
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Frequency of sampling
2
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PART 2 — Audit Monitoring
Sampling
3
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Frequency of sampling
4
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SCHEDULE 4 — Sampling and Analysis
PART 1 — General
Samples: general
1
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Analysing samples
2
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Authorisation of alternative methods of analysis
3
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Laboratories
4
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Interpretation
5
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PART 2 — Analytical Methods
| (1)Parameter | (2)Method |
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| *Use the following method to make m-CP agar: | *Use the following method to make m-CP agar: |
| Make a basal medium consisting of— | Make a basal medium consisting of— |
| 30.0g Tryptose; | 30.0g Tryptose; |
| 20.0g Yeast extract; | 20.0g Yeast extract; |
| 5.0g Sucrose; | 5.0g Sucrose; |
| 1.0g L-cysteine hydrochloride; | 1.0g L-cysteine hydrochloride; |
| 0.1g MgSO4.7 H₂O; | 0.1g MgSO4.7 H₂O; |
| 40.0mg Bromocresol purple; | 40.0mg Bromocresol purple; |
| 15.0g Agar; and | 15.0g Agar; and |
| 1,000.0ml Water. | 1,000.0ml Water. |
| Dissolve the ingredients of the basal medium, adjust pH to 7.6 and autoclave at 121°C for 15 minutes. Allow the medium to cool. Dissolve the following into 8ml sterile water before adding to the medium— | Dissolve the ingredients of the basal medium, adjust pH to 7.6 and autoclave at 121°C for 15 minutes. Allow the medium to cool. Dissolve the following into 8ml sterile water before adding to the medium— |
| 400.0mg D-cycloserine; | 400.0mg D-cycloserine; |
| 25.0mg Polymyxine-B sulphate; and | 25.0mg Polymyxine-B sulphate; and |
| 60.0mg Indoxyl-β-D-glucoside. | 60.0mg Indoxyl-β-D-glucoside. |
| Add to the medium— | Add to the medium— |
| 20.0 ml Filter-sterilised 0.5% phenolphthalein diphosphate solution; and | 20.0 ml Filter-sterilised 0.5% phenolphthalein diphosphate solution; and |
| 2.0ml Filter-sterilised 4.5% FeCl₃.6H₂O | 2.0ml Filter-sterilised 4.5% FeCl₃.6H₂O |
| Clostridium perfringens (including spores) | Membrane filtration followed by anaerobic incubation of the membrane on m-CP agar* at 44 ± 1°C for 21 ± 3 hours. Count opaque yellow colonies that turn pink or red after exposure to ammonium hydroxide vapours for 20 to 30 seconds. |
| Coliform bacteria | BS-EN ISO 9308-1 |
| Colony count 22°C-enumeration ofculturable microorganisms | BS-EN ISO 6222 |
| Colony count 37°C-enumeration ofculturable microorganisms | BS-EN ISO 6222 |
| Enterococci | BS-EN ISO 7899-2 |
| Escherichia coli (E. coli) | BS-EN ISO 9308-1 |
| (1)Parameters | (2)Trueness % of prescribed concentration or value or specification |
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| (1)The method of analysis should determine total cyanide in all forms. | (1)The method of analysis should determine total cyanide in all forms. |
| (2)The performance characteristics apply to each individual pesticide and will depend on the pesticide concerned. | (2)The performance characteristics apply to each individual pesticide and will depend on the pesticide concerned. |
| (3)The performance characteristics apply to the individual substances specified at 25% of the parametric value in Table B of Part 1 of Schedule 1. | (3)The performance characteristics apply to the individual substances specified at 25% of the parametric value in Table B of Part 1 of Schedule 1. |
| (4)The performance characteristics apply to the individual substances specified at 50% of the parametric value in Table B of Part 1 of Schedule 1. | (4)The performance characteristics apply to the individual substances specified at 50% of the parametric value in Table B of Part 1 of Schedule 1. |
| (5)The performance characteristics apply to the prescribed value of 4 NTU. | (5)The performance characteristics apply to the prescribed value of 4 NTU. |
| (6)The performance characteristics apply to the specification of 1 NTU for water leaving surface water treatment works. | (6)The performance characteristics apply to the specification of 1 NTU for water leaving surface water treatment works. |
| Aluminium | 10 |
| Ammonium | 10 |
| Antimony | 25 |
| Arsenic | 10 |
| Benzene | 25 |
| Benzo(a)pyrene | 25 |
| Boron | 10 |
| Bromate | 25 |
| Cadmium | 10 |
| Chloride | 10 |
| Chromium | 10 |
| Colour | 10 |
| Conductivity | 10 |
| Copper | 10 |
| Cyanide [^f01049] | 10 |
| 1,2-dichloroethane | 25 |
| Fluoride | 10 |
| Iron | 10 |
| Lead | 10 |
| Manganese | 10 |
| Mercury | 20 |
| Nickel | 10 |
| Nitrate | 10 |
| Nitrite | 10 |
| Pesticides and related products [^f01050] | 25 |
| Polycyclic aromatic hydrocarbons [^f01051] | 25 |
| Selenium | 10 |
| Sodium | 10 |
| Sulphate | 10 |
| Tetrachloroethene [^f01052] | 25 |
| Tetrachloromethane | 20 |
| Trichloroethene [^f01052] | 25 |
| Trihalomethanes:Total [^f01051] | 25 |
| Turbidity[^f01053] | 10 |
| Turbidity[^f01054] | 25 |
SCHEDULE 5 — Records
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Signed
Sealed with the Official Seal of the Department of the Environment on 11th December 2009
Maggie Smith — A senior officer of the — Department
Explanatory note
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Footnotes
[^f00001]: S.I. 2006/3336 (N.I. 21)
[^f00002]: S.I. 2008/301
[^f00003]: 1972 c.68
[^f00011]: S.R. 1994 No. 237
[^f00012]: SI 2006/3336 (N.I. 21)
Editorial notes
Use of products or substances in private supplies
7A
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PART 3 — Monitoring for Indicative Dose and Analytical Performance Characteristics
Monitoring for Compliance with the ID
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Calculation of the ID
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Performance characteristics and method of analysis.
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