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The Private Water Supplies Regulations (Northern Ireland) 2009
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Changes over time for: SCHEDULE 1
Version Superseded: 27/10/2017
Alternative versions:
- 18/01/2010- Amendment
- 28/11/2015- Amendment
- 28/11/2015
Point in time - 27/10/2017- Amendment
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Point in time view as at 28/11/2015.
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There are currently no known outstanding effects for the The Private Water Supplies Regulations (Northern Ireland) 2009, SCHEDULE 1.
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Regulation 5
SCHEDULE 1N.I.Concentrations and Values
This schedule has no associated Explanatory Memorandum
PART 1N.I.Wholesomeness
Commencement Information
I1Sch. 1 Pt. 1 in operation at 18.1.2010, see reg. 1
TABLE A
MICROBIOLOGICAL PARAMETERS
Directive requirements – Prescribed concentrations and values
| Parameters | Maximum concentration or value | Units of Measurement |
|---|---|---|
| Escherichia coli (E. coli) | 0 | Number/100ml |
| Enterococci | 0 | Number/100ml |
TABLE B
CHEMICAL PARAMETERS
Directive requirements – Prescribed concentrations and values
| 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. | ||
(2) See also the nitrate-nitrite formula in regulation 5(c) | ||
(3) For these purposes “Pesticides” means— (a) organic insecticides, (b) organic herbicides, (c) organic fungicides, (d) organic nematocides, (e) organic acaricides, (f) organic algicides, (g) organic rodenticides, (h) organic slimicides, (i) 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. | ||
(5) The specified compounds are: (a) benzo(b)fluoranthene (b) benzo(k)fluoranthene (c) benzo(ghi)perylene (d) 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. | ||
(7) The specified compounds are: (a) chloroform (b) bromoform (c) dibromochloromethane (d) bromodichloromethane The parametric value applies to the sum of the concentrations of the individual compounds detected and quantified in the monitoring process. | ||
| Acrylamide (1) (1) | 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 (1) (1) | 0.10 | μg/l |
| Fluoride | 1.5 | mgF/l |
| Lead | (a) 25 until immediately before 25th December 2013 | μgPb/l |
| (b) 10, on and after 25th December 2013 | μgPb/l | |
| Mercury | 1.0 | μgHg/l |
| Nickel | 20 | μgNi/l |
| Nitrate (2) (2) | 50 | mgNO3/l |
| Nitrite | 0.5 | mgNO2/l |
| Pesticides (3) (3) | ||
| 0.030 | μg/l |
| 0.030 | μg/l |
| 0.030 | μg/l |
| 0.030 | μg/l |
| 0.10 | μg/l |
| 0.50 | μg/l |
| Polycyclic aromatic hydrocarbons (5) | 0.10 | μg/l |
| Selenium | 10 | μgSe/l |
| Tetrachloroethene and Trichloroethene (6) | 10 | μg/l |
| Trihalomethanes: Total (7) | 100 | μg/l |
| Vinyl chloride (1) (1) | 0.50 | μg/l |
National requirements – Prescribed concentrations and values
| 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)) | ||
| Aluminium | 200 | μgAl/l |
| Colour | 20 | mg/l Pt/Co |
| Iron | 200 | μgFe/l |
| Manganese | 50 | μgMn/l |
| Nitrite (1) | 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 |
[F1PART 2N.I.Indicator Parameters
Textual Amendments
F1Sch. 1 Pt. 2 substituted (28.11.2015) by The Private Water Supplies (Amendment) Regulations (Northern Ireland) 2015 (S.R. 2015/366), regs. 1(1), 7
| Parameters | Maximum concentration or value or state (unless otherwise stated) | Units of measurement |
|---|---|---|
(1) The water should not be aggressive. | ||
(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. | ||
(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. | ||
(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.] | ||
| Ammonium | 0.50 | mgNH4/l |
| Chloride(1) (1) | 250 | mgCl/l |
| Clostridium perfringens (including spores) | 0 | Number/100ml |
| Coliform bacteria | 0 | Number/100ml |
| Colony counts | No abnormal change No abnormal change | Number/1ml at 22oC Number/1ml at 37oC |
| Conductivity(1) (1) | 2,500 | µS/cm at 20oC |
| Hydrogen ion(1) (1) | 9.5 6.5 (minimum) | pH value pH value |
| Sulphate(1) (1) | 250 | mgSO4/l |
| Indicative dose (for radioactivity)(2) (2)(3) (3)(4) | 0.10 | mSv/year |
| Radon (for radioactivity)(3) (3)(5) | 100 | Bq/1 |
| Total organic carbon(TOC) | No abnormal change | mgC/l |
| Tritium (for radioactivity)(3) (3)(6) | 100 | Bq/l |
| Turbidity(7) | 1 | NTU |
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