SCHEDULE 2SAMPLING FREQUENCIES FOR CLASSES A, B, 1 AND 2
Parameter | Sampling Frequency (number per annum) | Sampling Frequency (number per annum) | ||||
|---|---|---|---|---|---|---|
Class A and Class 1 | Class B and Class 2 | |||||
Reduced | Standard | Increased | Reduced | Standard | Increased | |
(1) | (2) | (3) | (4) | (5) | (6) | (7) |
PART I: | ||||||
Conductivity | 6 | 12 | 24 | 4 | 6 | 12 |
Hydrogen ion | 6 | 12 | 24 | 4 | 6 | 12 |
Odour (qualitative) | 6 | 12 | 24 | 4 | 6 | 12 |
Taste (qualitative) | 6 | 12 | 24 | 4 | 6 | 12 |
PART II: | ||||||
Odour (quantitative) | — | 4 | 24 | — | 4 | 12 |
Taste (quantitative) | — | 4 | 24 | — | 4 | 12 |
Turbidity | — | 4 | 24 | — | 4 | 12 |
Temperature | — | 4 | 24 | — | 4 | 12 |
Nitrate | — | 4 | 24 | — | 4 | 12 |
Nitrite | — | 4 | 24 | — | 4 | 12 |
Ammonium | — | 4 | 24 | — | 4 | 12 |
Iron | — | 4 | 24 | — | 4 | 12 |
Aluminium | — | 4 | 24 | — | 4 | 12 |
Manganese | — | 4 | 24 | — | 4 | 12 |
Colour | — | 4 | 24 | — | 4 | 12 |
PART III: | ||||||
Trihalomethanes | 1 | 4 | 12 | 1 | 4 | 12 |
Tetrachloromethane | 1 | 4 | 12 | 1 | 4 | 12 |
Trichloroethene | 1 | 4 | 12 | 1 | 4 | 12 |
Tetrachloroethene | 1 | 4 | 12 | 1 | 4 | 12 |
Copper | 1 | 4 | 12 | 1 | 4 | 12 |
Lead | 1 | 4 | 12 | 1 | 4 | 12 |
Zinc | 1 | 4 | 12 | 1 | 4 | 12 |
Pesticides and related products(i) | 1 | 4 | 12 | 1 | 4 | 12 |
Polycyclic aromatic hydrocarbons(ii) | 1 | 4 | 12 | 1 | 4 | 12 |
PART IV: | ||||||
Chloride | — | 1 | 12 | — | 1 | 12 |
Sulphate | — | 1 | 12 | — | 1 | 12 |
Calcium | — | 1 | 12 | — | 1 | 12 |
Magnesium | — | 1 | 12 | — | 1 | 12 |
Sodium | — | 1 | 12 | — | 1 | 12 |
Potassium | — | 1 | 12 | — | 1 | 12 |
Dry residues | — | 1 | 12 | — | 1 | 12 |
Oxidizability (permanganate value) | — | 1 | 12 | — | 1 | 12 |
Total organic carbon | — | 1 | 12 | — | 1 | 12 |
Boron | — | 1 | 12 | — | 1 | 12 |
Surfactants | — | 1 | 12 | — | 1 | 12 |
Phosphorus | — | 1 | 12 | — | 1 | 12 |
Fluoride | — | 1 | 12 | — | 1 | 12 |
Barium | — | 1 | 12 | — | 1 | 12 |
Silver | — | 1 | 12 | — | 1 | 12 |
Arsenic | — | 1 | 12 | — | 1 | 12 |
Cadium | — | 1 | 12 | — | 1 | 12 |
Cyanide | — | 1 | 12 | — | 1 | 12 |
Chromium | — | 1 | 12 | — | 1 | 12 |
Mercury | — | 1 | 12 | — | 1 | 12 |
Nickel | — | 1 | 12 | — | 1 | 12 |
Antimony | — | 1 | 12 | — | 1 | 12 |
Selenium | — | 1 | 12 | — | 1 | 12 |
Total hardness | — | 1 | 12 | — | 1 | 12 |
Alkalinity | — | 1 | 12 | — | 1 | 12 |
PART IV: | ||||||
Total coliforms | — | 24 | — | — | 12 | 24 |
Faecal coliforms | — | 24 | — | — | 12 | 24 |
Residual disinfectant | — | 24 | — | — | 12 | 24 |
Colony counts | — | 24 | — | — | 12 | |
Notes:
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