Parameter Group RECOMMENDED RAW WATER QUALITY DRINKING WATER QUALITY STANDARDS Acceptable Value (mg/litre (unless otherwise stated)) Maximum Acceptable Value (mg/litre (unless otherwise stated)) Total Coliform 1 5000 MPN / 100 ml 0 in 100 ml E.coli 1 5000 MPN / 100 m 0 in 100 m Turbidity 1 1000 NTU 5 NTU Color 1 300 TCU 15 TCU pH 1 5.5 - 9.0 6.5 - 9.0 Free Residual Chlorine 1 - 0.2 - 5.0 Combined...
| Parameter | Group | RECOMMENDED RAW WATER QUALITY | DRINKING WATER QUALITY STANDARDS |
|---|---|---|---|
| Acceptable Value (mg/litre (unless otherwise stated)) | Maximum Acceptable Value (mg/litre (unless otherwise stated)) | ||
| Total Coliform | 1 | 5000 MPN / 100 ml | 0 in 100 ml |
| E.coli | 1 | 5000 MPN / 100 m | 0 in 100 m |
| Turbidity | 1 | 1000 NTU | 5 NTU |
| Color | 1 | 300 TCU | 15 TCU |
| pH | 1 | 5.5 – 9.0 | 6.5 – 9.0 |
| Free Residual Chlorine | 1 | – | 0.2 – 5.0 |
| Combined Chlorine | 1 | – | Not Less Than 1.0 |
| Temperature | 1 | – | – |
| Clostridium perfringens (including spores) | 1 | – | Absent |
| Coliform bacteria | 1 | – | – |
| Colony count 22° | 1 | – | – |
| Conductivity | 1 | – | – |
| Enterococci | 1 | – | – |
| Odour | 1 | – | – |
| Taste | 1 | – | – |
| Oxidisability | 1 | – | – |
| Total Dissolved Solids | 2 | 1500 | 1000 |
| Chloride | 2 | 250 | 250 |
| Ammonia | 2 | 1.5 | 1.5 |
| Nitrat | 2 | 10 | 10 |
| Ferum/Iron | 2 | 1.0 | 0.3 |
| Fluoride | 2 | 1.5 | 0.4 – 0.6 |
| Hardness | 2 | 500 | 500 |
| Aluminium | 2 | – | 0.2 |
| Manganese | 2 | 0.2 | 0.1 |
| Chemical Oxygen Demand | 2 | 10 | – |
| Anionic Detergent MBAS | 2 | 1.0 | 1.0 |
| Biological Oxygen Demand | 2 | 6 | – |
| Nitrite | 2 | – | – |
| Total organic carbon (TOC) | 2 | – | – |
| Mercury | 3 | 0.001 | 0.001 |
| Cadmium | 3 | 0.003 | 0.003 |
| Arsenic | 3 | 0.01 | 0.01 |
| Cyanide | 3 | 0.07 | 0.07 |
| Plumbum/Lead | 3 | 0.05 | 0.01 |
| Chromium | 3 | 0.05 | 0.05 |
| Cuprum/Copper | 3 | 1.0 | 1.0 |
| Zinc | 3 | 3 | 3 |
| Natrium/Sodium | 3 | 200 | 200 |
| Sulphate | 3 | 250 | 250 |
| Selenium | 3 | 0.01 | 0.01 |
| Argentum | 3 | 0.05 | 0.05 |
| Magnesium | 3 | 150 | 150 |
| Mineral Oil | 3 | 0.3 | 0.3 |
| Chloroform | 3 | – | 0.2 |
| Bromoform | 3 | – | 0.1 |
| Dibromoklorometana | 3 | – | 0.1 |
| Bromodiklorometana | 3 | – | 0.06 |
| Fenol/Phenol | 3 | 0.002 | 0.002 |
| Antimony | 3 | – | 0.005 |
| Nickel | 3 | – | 0.02 |
| Dibromoacetonitrile | 3 | – | 0.1 |
| Dichloroacetic acid | 3 | – | 0.05 |
| Dichloroacetonitrile | 3 | – | 0.09 |
| Trichloroacetic acid | 3 | – | 0.1 |
| Trichloroacetonitrile | 3 | – | 0.001 |
| Trihalomethanes – Total | 3 | – | 1.00 |
| Aldrin / Dealdrin | 4 | 0.00003 | 0.00003 |
| DDT | 4 | 0.002 | 0.002 |
| Heptachlor & Heptachlor Epoxide | 4 | 0.00003 | 0.00003 |
| Methoxychlor | 4 | 0.02 | 0.02 |
| Lindane | 4 | 0.002 | 0.002 |
| Chlordane | 4 | 0.0002 | 0.0002 |
| Endosulfan | 4 | 0.03 | 0.03 |
| Hexachlorobenzena | 4 | 0.001 | 0.001 |
| 1,2-dichloroethane | 4 | – | 0.03 |
| 2,4,5-T | 4 | – | 0.009 |
| 2,4,6-trichlorophenol | 4 | – | 0.2 |
| 2,4-D | 4 | 0.03 | 0.03 |
| 2,4-DB | 4 | – | 0.09 |
| 2,4-dichlorophenol | 4 | – | 0.09 |
| Acrylamide | 4 | – | 0.0005 |
| Alachlor | 4 | – | 0.02 |
| Aldicarb | 4 | – | 0.01 |
| Benzene | 4 | – | 0.01 |
| Carbofuran | 4 | – | 0.007 |
| MCPA | 4 | – | 0.002 |
| Pendimethalin | 4 | – | 0.02 |
| Pentachlorophenol | 4 | – | 0.009 |
| Permethrin | 4 | – | 0.02 |
| Pesticides | 4 | – | – |
| Pesticides – Total | 4 | – | – |
| Polycyclic aromatic hydrocarbons | 4 | – | – |
| Propanil | 4 | – | 0.02 |
| Tetrachloroethene and Trichloroethene | 4 | – | – |
| Vinyl chloride | 4 | – | 0.005 |
| Gross alpha (α) | 5 | 0.1Bq/l | 0.1Bq/l |
| Gross beta (β) | 5 | 1.0 Bq/l | 1.0 Bq/l |
| Tritium | 5 | – | – |
| Total indicative dose | 5 | – | – |
