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 |