Parameters | GR 1G | GR 2G | GR 3G | GR 4G | GR 5G | GR 6G | GR 7G | GR PWD1 | GR PWD2 |
pH | 6.24 | 6.53 | 6.27 | 6. 61 | 6. 66 | 6.81 | 8.55 | 7.30 | 7.34 |
EC (μs/cm) | 1622 | 945 | 630 | 2420 | 2310 | 757 | 665 | 427 | 428 |
Temperature (˚C) | 28.4 | 29.5 | 28.8 | 31.7 | 28.7 | 29.1 | 29.5 | 32.9 | 32.2 |
Colour (Hazen) | 1 | 3 | 2.8 | 5 | 9.3 | 3.6 | BDL | 1 | 1 |
Turbidity (NTU) | 0.5 | 2.5 | 1. 6 | 3.5 | 5.5 | 2.4 | BDL | 0.4 | 0.5 |
Total alkalinity (mg/l) | 131.92 | 131.92 | 89.24 | 190.12 | 267.72 | 131.92 | 97 | 89.24 | 89.24 |
TDS (mg/l) | 1150 | 661.5 | 447 | 1710 | 1560 | 537 | 472 | 303 | 304 |
Salinity (ppt) | 0.476 | 0.281 | 0.190 | 0.731 | 0.690 | 0.228 | 0.200 | 0.129 | 0.130 |
Total Hardness (mg/l) | 265.2 | 122.4 | 106.8 | 550.8 | 306 | 114.24 | 110.16 | 93.84 | 89.76 |
Calcium (mg/l) | 73.44 | 40.8 | 29.38 | 122.4 | 48.96 | 27.74 | 32. 64 | 22.85 | 22.85 |
Magnesium(mg/l) | 19.83 | 4.96 | 7.93 | 59.49 | 44.61 | 10.91 | 6.94 | 8.92 | 7.93 |
Iron (mg/l) | BDL | 0.4 | BDL | 0.7 | 2.1 | 0.2 | BDL | BDL | BDL |
Manganese (mg/l) | 0.01 | BDL | BDL | 0.01 | BDL | BDL | BDL | BDL | BDL |
Sodium (mg/l) | 204.8 | 113.2 | 42.15 | 422.2 | 340 | 84 | 42.31 | 20.39 | 19.49 |
Potassium (mg/l) | 8.5 | 8.5 | 3. 67 | 46 | 16 | 7. 6 | 13.24 | 2.83 | 2.82 |
Chloride (mg/l) | 328.20 | 153.42 | 62.14 | 901.09 | 514.44 | 77.72 | 66. 62 | 29. 61 | 29. 61 |
Sulphate (mg/l) | 146 | 43.2 | 27.96 | 242.4 | 95.2 | 4.88 | 20.72 | 2. 64 | 2.88 |
Nitrate-N (mg/l) | 0.38 | 0.36 | 0.09 | 0.85 | 1.41 | 0.58 | 0.07 | 0.16 | 0.17 |
Phosphate-P (mg/l) | 0.04 | BDL | 0.21 | 0.01 | 0.14 | 0.12 | 0.04 | 0.02 | 0.08 |
Total Coliform (MPN/100) | ≥2400 | ≥2400 | ≥2400 | ≥2400 | 1100 | ≥2400 | 1100 | 460 | 460 |
Faecal coliform | ≥2400 | ≥2400 | ≥2400 | ≥2400 | 210 | 1100 | 1100 | 210 | 240 |
E. coli | Present | Present | Present | Present | Present | Present | Present | Present | Present |