Source: Central Pollution Control Board publication ADSORBS/3/1978-79
Designated Best Use
Class of water
Criteria
Drinking water source without Conventional treatment but after disinfection
A
• Total Coliform Organisms MPN/100 ml shall be 50 or less • pH between 6.5 to 8.5 • Dissolved Oxygen 6 mg/l or more • Biochemical Oxygen Demand 5 days 20 0 C 2 mg/l or less
Outdoor Bathing (Organised)
B
• Total Coliform Organisms MPN/100 ml shall be 50 or less • pH between 6.5 to 8.5 • Dissolved Oxygen 6 mg/l or more • Biochemical Oxygen Demand 5 days 20 0 C 2 mg/l or less
Drinking Source with Conventional treatment and disinfection
C
• Total Coliform Organisms MPN/100 ml shall be 5000 or less • pH between 6.5 to 9.0 • Dissolved Oxygen 4 mg/l or more • Biochemical Oxygen Demand 5 days 20 0 C 3 mg/l or less
Propagation of Wildlife and fisheries
D
• pH between 6.5 to 8.5 • Dissolved Oxygen 4 mg/l or less • Free Ammonia (as N) 1.2 mg/l or less
Irrigation, Industrial Cooling, Controlled Waste
E
• pH between 6.0 to 8.5 • Electrical Conductivity at 25 0 C micro mhos/cm max. 2250 • Sodium absorption ratio max. 26 • Boron max. 2 mg/l
Designated best use Classification for Coastal Segment Marine Water
GSR-7 EPA 86 22.12.98
Class
Designated Best Use
SW-I
Salt pans, Shell fishing, Mariculture and Ecological Sensitive Zones
SW-II
Bathing, Contact Water Sports and Commercial fishing
SW-III
Industrial cooling, Recreation (non-contact) and aesthetics
