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Table 7 Classification of lakes based on select parameters [58]

From: Aqueous chemistry of anthropogenically contaminated Bengaluru lakes

Parameter

Class II A: Water supply with conventional treatment

Class IIB: Recreational use with body contact

Median concentration of Bengaluru Lakes

Ammoniacal Nitrogen (mg L−1)

0.3

0.3

0

COD (mg L− 1)

25

25

41

DO (mg L−1)

5–7

5–7

12.5

pH

6.5 to 9.0

6.5–9.0

9.1

Electrical Conductivity (μS cm−1)

1000

–

610

Faecal Coliform (CFU 100 mL−1)

100

400

Not tested