Research Article
Assessment of Groundwater Quality along the Cooum River, Chennai, Tamil Nadu, India
Table 4
Water quality parameters with respect to the WHO standards.
| S. no | Parameter | WHO |
| 1 | pH | 7.0–8.5 | 2 | Electrical conductivity (EC) (μS/cm) | 1400 | 3 | Total dissolved solids (mg/L) | 1000 | 4 | Bio chemical oxygen demand (BOD) (mg/L) | 5 | 5 | Chemical oxygen demand (COD) (mg/L) | 10 | 6 | Sodium (mg/L) | 200 | 7 | Lead | 0.01 |
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