Sarawak ID
| Recommended Raw Water Quality Criteria & Drinking Water Quality Standards and Frequency of Monitoring (2000 Version) | ||||||
| RAW WATER | DRINKING WATER | |||||
| Parameter | Recommended Acceptable Value |
Frequency of Monitoring | Standard | Frequency of Monitoring | ||
| Treatment Plant Outlet | Service Reservoir Outlet | Distribution System | ||||
| Microbiological: | ||||||
| Total Coliform | 5000 cfu/100 ml | W | MPN Method/Membrane Filtration Method : Must not be detected in any 100 ml sample. |
W | W | W |
| E. Coli or Thermotolerant Coliform Bacteria | - | - | Absent in 100 ml | W | W | M |
| Faecal Striptococci | - | - | Membrane Filter Method : Absent in 100 ml sample MPN Method : <1 in 100 ml sample |
WN | WN | WN |
| Clostridium | - | - | Absent | WN | WN | WN |
| Viruses | - | - | Absent in 100 ml | WN | WN | WN |
| Protozoa | - | - | Absent in 100 ml | WN | WN | WN |
| Helminths | - | - | Absent in 100 ml | WN | WN | WN |
| PHYSICAL - GROUP I: | ||||||
| Turbidity (NTU) | 1000 | W | 5 | W | W | M |
| Colour (Hazen) | 300 | W | 15 | W | W | M |
| pH (H ion) | 5.5-9.0 | W | 6.5 - 9.0 | W | W | M |
| Free Residual Chlorine | - | - | not less than 0.2 | W | W | M |
| Combine Residual Chlorine | - | - | not less than 1.0 | W | W | M |
| Monochloramine | - | - | 3 | WN | WN | WN |
| INORGANIC - GROUP II: | ||||||
| TDS at 105 - 110 C | 1500 | M | 1000 | M | M | Y/2 |
| Biochemical Oxygen Demand | 6 | M | - | - | - | - |
| Chemical Oxygen Demand | 10 | M | - | - | - | - |
| Chloride | 250 | M | 2.50 | M | M | Y/2 |
| Anionic Detergent MBAS | 1 | M | 1 | M | M | Y/2 |
| Ammonia (N) | 1.5 | M | 1.5 | M | M | Y/2 |
| Nitrate (N) | 10 | M | 10 | M | M | Y/2 |
| Total Nitrogen (N) | 1.0 | M | - | - | - | - |
| Iron (Fe) | 1.0 | M | 0.3 | M | M | Y/2 |
| Fluoride (F) | 1.5 | M | 0.4 - 0.6 | M | M | Y/2 |
| Hardness | 500 | M | 500 | M | M | Y/2 |
| Aluminium (Al) | - | M | 0.2 | M | M | Y/2 |
| Manganese (Mn) | 0.2 | Y/4 | 0.1 | M | M | Y/2 |