- Y Diweddaraf sydd Ar Gael (Diwygiedig)
- Gwreiddiol (a wnaed Fel)
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Regulation 16(b)
(1) | (2) | (3) | (4) | (5) | (6) |
---|---|---|---|---|---|
Notes— | |||||
Note 1: Water must not be aggressive or corrosive. This applies particularly to water undergoing treatment (demineralisation, softening, membrane treatment, reverse osmosis, etc.). | |||||
Note 2: Where water intended for human consumption is derived from treatment that significantly demineralises or softens water, calcium and magnesium salts could be added to condition the water in order to reduce any possible negative health impact, as well as to reduce the corrosiveness or aggressivity of water and to improve taste. Minimum concentrations of calcium and magnesium or total dissolved solids in softened or demineralised water could be established taking into account the characteristics of water that enters those processes. | |||||
Note 3: The water must not be corrosive. | |||||
Note 4: This parameter must be measured if a risk assessment under regulation 30(2) indicates that it is appropriate to do so. | |||||
Note 5: For water put into bottles or containers (which is not intended for sale for drinking by humans), the unit is number/250ml. | |||||
Note 6: The water must not be aggressive. | |||||
Note 7: For water put into bottles or containers (which is not intended for sale for drinking by humans), the minimum value is 4.5 pH units. | |||||
Note 8: This parameter need not be measured for supplies of less than 10,000 m³ a day. | |||||
Note 9: Remedial action is to be deemed justified on radiological protection grounds, without further consideration where radon concentrations exceed 1,000 Bq/l. | |||||
Note 10: If the concentration of tritium exceeds this value, an analysis of the presence of other artificial radionuclides must also be carried out by Scottish Water.” | |||||
Item | Parameter | Concentration or value (maximum) or state | Units of measurement | Point of monitoring | Notes |
Part 1 | |||||
1. | Ammonium | 0.50 | mgNH4/1 | Consumer’s tap | |
2. | Chloride | 250 | mgCl/1 | Supply point | Note 3 |
3. | Clostridium perfringens (including spores) | 0 | Number/100ml | Supply point | Note 4 |
4. | Coliform bacteria | 0 | Number/100ml | Consumer’s tap | Note 5 |
5. | Colony count | No abnormal change | Number/1ml at 22°C | Consumer’s tap, service reservoir and treatment works | |
6. | Colour | Acceptable to consumers and no abnormal change | Consumer’s tap | ||
7. | Conductivity | 2500 | μS/cm at 20°C | Supply point | Note 6 |
8. | Hydrogen ion | 9.5 | pH value | Consumer’s tap | Notes 6 and 7 |
6.5 (minimum) | |||||
9. | Odour | Acceptable to consumers and no abnormal change | Consumer’s tap | ||
10. | Sulphate | 250 | mgSO4/l | Supply point | Note 3 |
11. | Taste | Acceptable to consumers and no abnormal change | Consumer’s tap | ||
12. | Total organic carbon | No abnormal change | mgC/1 | Supply point | Note 8 |
13. | Turbidity | 1 | NTU | Treatment works | |
Part 2 | |||||
14. | Indicative dose | 0.10 | mSv | Supply point | |
15. | Radon | 100 | Bq/l | Supply point | Note 9 |
16. | Tritium | 100 | Bq/l | Supply point | Note 10 |
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Policy Note sets out a brief statement of the purpose of a Scottish Statutory Instrument and provides information about its policy objective and policy implications. They aim to make the Scottish Statutory Instrument accessible to readers who are not legally qualified and accompany any Scottish Statutory Instrument or Draft Scottish Statutory Instrument laid before the Scottish Parliament from July 2012 onwards. Prior to this date these type of notes existed as ‘Executive Notes’ and accompanied Scottish Statutory Instruments from July 2005 until July 2012.
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