Water Quality CriteriaUpdated on : 11 Sep 2017

Table 1

Designated-Best-Use Class of water Criteria
Drinking WaterSource without conventional treatment but after disinfection A
  • Total Coliforms Organism MPN/100ml shall be 50 or less
  • pH between 6.5 and 8.5
  • Dissolved Oxygen 6mg/l or more
  • Biochemical Oxygen Demand 5 days 20C 2mg/l or less
Outdoor bathing (Organised) B
  • Total Coliforms Organism MPN/100ml shall be 500 or less pH between 6.5 and 8.5 Dissolved Oxygen 5mg/l or more
  • Biochemical Oxygen Demand 5 days 20C 3mg/l or less
Drinking water source after conventional treatment and disinfection C
  • Total Coliforms Organism MPN/100ml shall be 5000 or less pH between 6 to 9 Dissolved Oxygen 4mg/l or more
  • Biochemical Oxygen Demand 5 days 20C 3mg/l or less
Propagation of Wild life and Fisheries D
  • pH between 6.5 to 8.5 Dissolved Oxygen 4mg/l or more
  • Free Ammonia (as N) 1.2 mg/l or less
Irrigation, Industrial Cooling, Controlled Waste disposal E
  • pH betwwn 6.0 to 8.5
  • Electrical Conductivity at 25C micro mhos/cm Max.2250
  • Sodium absorption Ratio Max. 26
  • Boron Max. 2mg/l
Below-E Not Meeting A, B, C, D & E Criteria
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