Place | Name | pH | EC | Alkalinity | TDS |
| Hardness | Cl− | Reactive silica | Ca | Fe | Mg | Na | K | Al | Pb |
Pasighat Monsoon | PAS.M | 6.2 | 132.5 | 130.2 | 62.5 | 16.28 | 185 | 56.8 | 2.16 | 22.81 | 1.48 | 3.75 | 2.74 | 1.42 | 1.27 | 0.022 |
Pasighat Post Monsoon | PAS.PM | 7.7 | 221 | 155.4 | 102.5 | 22.21 | 100 | 63.9 | 3.79 | 27.8 | 0.09 | 5.33 | 3.49 | 2.04 | 0.46 | 0.003 |
Dibrugarh Monsoon | DIB.M | 6.2 | 97.5 | 115.4 | 47 | 6.43 | 185 | 71 | 2.4 | 13.52 | 0.23 | 2.3 | 2.17 | 2.34 | 0.38 | 0.013 |
Dibrugarh Post Monsoon | DIB.PM | 7.6 | 187 | 180.6 | 89 | 12.14 | 90 | 71 | 5.49 | 25.41 | 0.11 | 5.51 | 3.25 | 3.23 | 0.43 | 0.001 |
Tezpur Monsoon | TEZ.M | 6.1 | 134 | 180.4 | 63.5 | 11.07 | 157.5 | 60.35 | 1.24 | 4.89 | 0.22 | 0.9 | 0.96 | 1.87 | 0.64 | 0.001 |
Tezpur Post Monsoon | TEZ.PM | 7.2 | 195 | 205.4 | 90.5 | 14 | 90 | 46.15 | 4.72 | 24.6 | 0.17 | 5.43 | 3.42 | 2.65 | 0.52 | 0.002 |
Guwahati Monsoon | GHY.M | 6.1 | 130 | 205 | 63.5 | 11.14 | 185 | 67.45 | 3.27 | 18.2 | 1.91 | 3.44 | 3.03 | 2.78 | 2.15 | 0.022 |
Guwahati Post Monsoon | GHY.PM | 3.3 | 816.5 | 180 | 194.5 | 19.92 | 95 | 37.28 | 5.78 | 27.49 | 0.003 | 6.13 | 3.47 | 2.87 | 0.38 | 0.003 |
Dhubri Monsoon | DHU.M | 6.1 | 88.5 | 217.5 | 44 | 10 | 187.5 | 56.8 | 3.12 | 19.36 | 2.93 | 3.94 | 2.54 | 2.15 | 1.53 | 0.016 |
Dhubri Post Monsoon | DHU.PM | 5.4 | 212.5 | 230 | 98.5 | 14.64 | 90 | 49.2 | 3.88 | 28.29 | 0.06 | 6.78 | 3.43 | 2.82 | 0.39 | 0.001 |
Mean Monsoon | 6.13 | 116.5 | 177.7 | 56.1 | 10.98 | 180 | 62.48 | 2.45 | 15.76 | 1.36 | 2.86 | 2.29 | 2.11 | 1.19 | 0.017 | |
Mean Post Monsoon | 5.67 | 196.06 | 171.1 | 93.44 | 12.69 | 129.8 | 54.07 | 3.26 | 19.58 | 0.81 | 3.97 | 2.63 | 2.23 | 0.83 | 0.009 | |
Standard deviation monsoon | 0.07 | 21.73 | 35.67 | 9.74 | 3.533 | 12.6 | 6.45 | 0.82 | 6.92 | 1.16 | 1.26 | 0.81 | 0.51 | 0.71 | 0.005 | |
Standard deviation post monsoon | 2.09 | 203.64 | 51.12 | 98.4 | 5.22 | 57.5 | 18.12 | 1.56 | 8.01 | 0.95 | 1.91 | 0.94 | 0.74 | 0.57 | 0.008 |