| Parameters | GR-4 |
| pH | 8.45 |
| EC (micro siemens/cm) | 1314 |
| Temperature (˚C) | 34.2 |
| Colour (Hazen) | 4 |
| Turbidity (NTU) | 3 |
| Total alkalinity (mg/l) | 38.8 |
| TDS (mg/l) | 931 |
| Salinity (ppt) | 400 |
| Total Hardness (mg/l) | 383.52 |
| Calcium (mg/l) | 130. 6 |
| Magnesium (mg/l) | 13.880 |
| Iron (mg/l) | BDL |
| Manganese (mg/l) | 0.017 |
| Sodium (mg/l) | 99.4 |
| Potassium (mg/l) | 31.8 |
| Chloride (mg/l) | 699.45 |
| Sulphate (mg/l) | 32.28 |
| Nitrate-N (mg/l) | 1.56 |
| Phosphate-P (mg/l) | 0.08 |
| Total Coliform (MPN/100) | ≥2400 |
| Faecal coliform | ≥2400 |
| E. coli | Present |
| COD (mg/l) | 80 |
| DO (mg/l) | 8.316 |
| BOD (mg/l) | 2.178 |
| TSS (mg/l) | 51 |
| Oil and Grease (mg/l) | 98 |