No. | References/parameters (mean values) | pH | EC μS/cm | DO (mg/l) | TDS (mg/l) | Salinity (ppt) | Turbidity (NTU) | BOD (mg/l) | COD (mg/l) | NH3-N (mg/l) | TSS (mg/l) | TN (mg/L) | TP (mg/L) | WQI |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1 | Eisakhani and Malakahmad 2009a | 6.90 | 52.11 | – | 23.60 | – | – | – | 13.40 | – | 16.01 | 1.70 | 0.22 | – |
2 | Riduan et al. 2009 | 7.30 | 49.00 | 3.19 | 0.030 | – | 603.00 | – | – | – | – | – | – | – |
3 | Saadati et al. 2012 | – | 67.90 | – | 13.20 | 0.03 | 170.75 | – | – | – | 480.00 | – | – | – |
4 | Khalik et al. 2013aa | 6.54 | 58.33 | 6.31 | 43.33 | 0.01 | – | 2.64 | 16.67 | 0.25 | 15.08 | 1.13 | 0.88 | 78.00 (class II) |
5 | Khalik et al. 2013b | 6.52 | 51.83 | 4.83 | 38.40 | – | – | – | – | 0.14 | – | – | 1.60 | – |
6 | Khalik and Abdullah 2013 | 7.40 | 95.69 | 9.28 | 40.00 | 0.02 | – | – | – | – | – | – | – | – |
7 | Al-Nafiey et al. 2014 | 7.65 | 50.07 | – | – | – | – | – | – | – | – | – | – | – |
8 | Jamil et al. 2014a | – | – | – | – | – | – | – | – | – | – | – | – | 77.05 (class II) |
9 | Abdullah et al. 2015a | 6.35 | 54.98 | 8.48 | 35.86 | 0.02 | – | – | – | – | – | – | – | – |
10 | Aminu et al. 2014a | 8.12 | – | 8.33 | – | – | – | 1.76 | 13.00 | 0.80 | 85.05 | – | – | 62.41 (class III) |
11 | Rasul et al. 2015 | 6.87 | 68.80 | 7.08 | 47.15 | – | 88.63 | 7.79 | 20.55 | 0.95 | 136.05 | 3.28 | 1.16 | – |
12 | Tan and Beh 2016 | 6.19 | – | 6.84 | – | – | – | 2.90 | 27.42 | 0.23 | 0.05 | – | – | 82.92 (class II) |