Regulations 11, 12 and 16
SCHEDULE 3E+WRequirements for spring water and drinking water including prescribed concentrations or values of parameters
Part IE+WRequirements for spring water and drinking water
1. Water satisfies the requirements of this Schedule if–E+W
(a)the water does not contain any property, element, organism, or substance–
(i)(other than a parameter) at a concentration or value which would be injurious to health;
(ii)(whether or not a parameter) at a concentration or value which in conjunction with any other property, element, organism or substance it contains (whether or not a parameter) would be injurious to health;
(b)the water does not contain–
(i)concentrations or values of any of the parameters listed in Tables A to D in Part II of this Schedule in excess of the prescribed concentrations or values;
(ii)concentrations of trihalomethanes (being the aggregate of the concentrations of trichloromethane, dichlorobromomethane, dibromochloromethane and tribromomethane) in excess of 100μg/l; and
(c)in the case of water prepared from water which has been softened or desalinated, its hardness is not below a minimum concentration of 60 mg Ca/l and its alkalinity is not below a minimum concentration of 30 mg HCO3/l.
2. The concentrations or values of the parameters listed in Tables A to D in Part II of this Schedule shall be read in conjunction with the notes thereto.E+W
Part IIE+WPrescribed concentrations or values
TABLE A
{s001} Note(i) If silver is used in a water treatment process, 80 may be substituted for 10. | |||
Column 1 | Column 2 | Column 3 | Column 4 |
---|---|---|---|
Item | Parameters | Units of Measurement | Concentration or Value (maximum unless otherwise stated) |
1. | Colour | mg/l Pt/Co scale | 20 |
2. | Turbidity (including suspended solids) | Formazin turbidity units | 4 |
3. | Odour (including hydrogen sulphide) | Dilution number | 3 at 25°C |
4. | Taste | Dilution number | 3 at 25°C |
5. | Temperature | °C | 25 |
6. | Sulphate | Mg SO4/l | 250 |
7. | Magnesium | Mg Mg/l | 50 |
8. | Sodium | Mg Na/l | 150 |
9. | Potassium | Mg K/l | 12 |
10. | Dry residues | Mg/l | 1500 (after drying at 180°C) |
11. | Nitrate | Mg NO3/l | 50 |
12. | Nitrite | Mg NO2/l | 0.1 |
13. | Ammonium (ammonia and ammonium ions) | Mg NH4/l | 0.5 |
14. | Kjeldahl nitrogen | Mg N/l | 1 |
15. | Oxidizability (permanganate value) | Mg O2/l | 5 |
16. | Total organic carbon | Mg C/l | No significant increase over that normally observed |
17. | Dissolved or emulsified hydrocarbons (after extraction with petroleum ether); mineral oils | μg/l | 10 |
18. | Phenols | μg C6H5OH/l | 0.5 |
19. | Surfactants | μg/l (as lauryl sulphate) | 200 |
20. | Aluminium | μg A1/l | 200 |
21. | Iron | μg Fe/l | 200 |
22. | Manganese | μg Mn/l | 50 |
23. | Copper | μg Cu/l | 3000 |
24. | Zinc | μg Zn/l | 5000 |
25. | Phosphorus | μg P/l | 2200 |
26. | Fluoride | μg F/l | 1500 |
27. | Silver | μg Ag/l | 10 {s001}(i) |
TABLE B
{s002}(i) The sum of the detected concentrations of individual substances. {s003}(ii) The sum of the detected concentrations of fluoranthene, benzo 3.4 fluoranthene, benzo 11.12 fluoranthene, benzo 3.4 pyrene, benzo 1.12 perylene and indeno (1,2,3–cd) pyrene. | |||
Column 1 | Column 2 | Column 3 | Column 4 |
---|---|---|---|
Item | Parameters | Units of Measurement | Maximum Concentration |
1. | Arsenic | μg As/l | 50 |
2. | Cadmium | μg Cd/l | 5 |
3. | Cyanide | μg CN/l | 50 |
4. | Chromium | μg Cr/l | 50 |
5. | Mercury | μg Hg/l | 1 |
6. | Nickel | μg Ni/l | 50 |
7. | Selenium | μg Se/l | 10 |
8. | Antimony | μg Sb/l | 10 |
9. | Lead | μg Pb/l | 10 |
10. | Pesticides and related products: (a)individual substances | μg/l | 0.1 |
(b)total substances {s002}(i) | μg/l | 0.5 | |
11. | Polycyclic aromatic Hydrocarbons {s003}(ii) | μg/l | 0.2 |
TABLE D
Column 1 | Column 2 | Column 3 | Column 4 |
---|---|---|---|
Item | Parameters | Units of Measurement | Maximum Concentration or Value |
1. | Conductivity | μS/cm | 1500 at 20°C |
2. | Chloride | mg Cl/l | 400 |
3. | Calcium | mg Ca/l | 250 |
4. | Substances extractable in chloroform | mg/l dry residue | 1 |
5. | Boron | μg B/l | 2000 |
6. | Barium | μg Ba/l | 1000 |
7. | Benzo 3.4 pyrene | ng/l | 10 |
8. | Tetrachloromethane | μg/l | 3 |
9. | Trichloroethene | μg/l | 30 |
10. | Tetrachloroethene | μg/l | 10 |