| Table 1. 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/l or more |
| Biochemical Oxygen Demand 5 days 20°C |
2mg/l or less |
| |
| Outdoor bathing (Organised) ( B ) |
| |
| Total Coliforms Organism MPN/100ml |
500 or less |
| pH |
between 6.5 and 8.5 |
| Dissolved Oxygen |
5mg/l or more |
| Biochemical Oxygen Demand 5 days 20°C |
3mg/l or less |
| |
| Drinking water source with conventional treatment followed by disinfection ( C ) |
| |
| Total Coliforms Organism MPN/100ml |
5000 or less |
| pH |
between 6 and 9 |
| Dissolved Oxygen |
4mg/l or more |
| Biochemical Oxygen Demand 5 days 20°C |
3mg/l or less |
| |
| Fish Culture and Wild life propagation ( D ) |
| |
| pH |
between 6.5 and 8.5 |
| Dissolved Oxygen |
4mg/l or more |
| Free Ammonia (as N) |
1.2mg/l or less |
| |
| Irrigation, Industrial Cooling or Controlled Waste disposal ( E ) |
| |
| pH |
between 6.0 and 8.5 |
| Electrical Conductivity at 25°C micro mhos/cm |
Max. 2250 |
| Sodium absorption Ratio |
Max. 27 |
| Boron |
Max. 2mg/l |
| |
| Below E |
| |
|
Not meeting A,B,C,D & E Criteria |
| |
