| Column 1 | Column 2 | Column 3 | Column 4 |
|---|---|---|---|
| Item | Parameters | Units of Measurement | Concentration or Value (maximum unless otherwise stated) |
| Note | |||
(i) If silver is used in a water treatment process, 80 may be substituted for 10. | |||
| 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/1 | 50 |
| 8. | Sodium | mg Na/l | 150 |
| 9. | Potassium | mg K/1 | 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 Al/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(i) |
| Column 1 | Column 2 | Column 3 | Column 4 |
|---|---|---|---|
| Item | Parameters | Units of Measurement | Maximum Concentration |
| Notes | |||
(i) The sum of the detected concentrations of individual substances. | |||
(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. | |||
| 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. | Lead | μg Pb/l | 50 |
| 8. | Antimony | μg Sb/l | 10 |
| 9. | Selenium | μg Se/l | 10 |
| 10. | Pesticides and related products: | ||
(a)individual substances | μg/l | 0.1 | |
(b)total substances(i) | μg/l | 0.5 | |
| 11. | Polycyclic aromatic hydrocarbons(ii) | μg/l | 0.2 |
| Column 1 | Column 2 | Column 3 | Column 4 |
|---|---|---|---|
| Item | Parameters | Units of Measurement | Maximum Concentration |
| Note | |||
(i) Analysis by multiple tube method. | |||
(ii) The total viable colony count should be measured within 12 hours of bottling with the sample water being kept at a constant temperature during that 12-hour period. Any increase in the total viable colony count of the water between 12 hours after bottling and the time of sale shall not be greater than that normally expected. | |||
| 1. | Total coliforms | number/100 ml | 0 |
| 2. | Faecal coliforms | number/100 ml | 0 |
| 3. | Faecal streptococci | number/100 ml | 0 |
| 4. | Sulphite-reducing clostridia | number/20 ml | ≤1(i) |
| 5. | Colony counts | number/1 ml at 22°C | 100(ii) |
| number/1 ml at 37°C | 20(ii) | ||
| 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 |