Primary water quality criteria for designated-best-use-classes
| Designated-Best-Use |
Class of water |
Criteria |
| Drinking water source 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/1 or more
- Biochemical Oxygen Demand 5 days 20oC 2mg/1or 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/1 or more
- Biochemical Oxygen Demand 5 days 20oC 3mg/1 or less
|
| Drinking water source after conventional treatment and disinfection |
C |
- 1.Total Coliforms Organism MPN/100ml shall be 5000 or less
- pH between 6 to 9
- Dissolved Oxygen 4mg/1 or more
- Biochemical Oxygen Demand 5 days 20oC 3mg/1 or less
|
| Propagation of Wildlife and Fisheries |
D |
- pH between 6.5 to 8.5
- Dissolved Oxygen 4mg/1 or more
- Free Ammonia (as N) 1.2mg/1 or less
|
| Irrigation, Industrial Cooling, Controlled Waste disposal |
E |
- pH between 6.0 to 8.5
- Electrical Conductivity at 25oC micro mhos/cm Max. 2250
- Sodium absorption Ratio Max. 26
- Boron Max. 2mg/1
|
Last Updated: February 26, 2013
