Use based Classification of Surface Waters in India
Designated-best-Use/ Beneficial Use Classification of water Criteria
Drinking water source without conventional treatment but after disinfection A 1. Total Coliforms Organism MPN/100 ml shall be 50 or less
2. pH between 6.5 and 8.5
3. Dissolved Oxygen 6 mg/l or more
4. Biochemical Oxygen Demand 5 days 20 oC 2 mg/l or less
Outdoor bathing (organised) B 1. Total Coliforms Organism MPN/100 ml shall be 500 or less
2. pH between 6.5 and 8.5
3. Dissolved Oxygen 5 mg/l or more
4. Biochemical Oxygen Demand 5 days 20 oC 3 mg/l or less
Drinking water source after conventional treatmen and disinfection C 1. Total Coliforms Organism MPN/100 ml shall be 5000 or less
2. pH between 6 and 9
3. Dissolved Oxygen 4 mg/l or more
4. Biochemical Oxygen Demand 5 days 20 oC 3 mg/l or less
Propagation of wild life and fisheries D 1. pH between 6.5 and 8.5
2. Dissolved Oxygen 4 mg/l or more
3. Free Ammonia (as N) 1.2 mg/l or less
Irrigation, industrial cooling, controlled waste disposal E 1. pH between 6.0 and 8.5
2. Electrical Conductivity at 25 oC micro mhos/cm maximum 2250
3. Sodium absorption ratio maximum 26
4. Boron maximum 2 mg/l
facebook Logo
Twitter  Logo
Instagram  Logo
Youtube  Logo
Koo  Logo
AQI Logo