Theme: Blue and Green Theme: Blue and Green Theme: Red Theme: Green
Background: 1 Background: 2 Background: 3 
 
 
 
 
Last Update: 17 08 2018
Version 8.1.0
 
Quality Control Standards Quality Control Standards
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