S/N | Parameter | Unit | Range | Current Study Mean ± S.E | Drinking Water Quality (NIS, 2007) (MPL) | Water Quality for Fish/Aquatic life (Meade, 1989) |
1 | Water-Temperature | ˚C | 24.0 - 33.5 | 28.3 ± 0.2 | Ambient | - |
2 | Apparent-Colour | Pt-Co | 181.1 - 1826.3 | 529.4 ± 42.2 | 15 TCU | - |
3 | True-Colour | Pt-Co | 37.6 - 643.5 | 165.2 ± 11.6 | 15 TCU | - |
4 | Turbidity | NTU | 7.6 - 183.3 | 40.6 ± 4.0 | 5 | - |
5 | Total Suspended Solids (TSS) | mgL−1 | 40 - 550 | 151 ± 12.8 | ND | <80 |
6 | Total Solids (TS) | mgL−1 | 90 - 590 | 207 ± 13.1 | ND | - |
7 | * pH | 0 - 14 | 6.00 - 6.85 | 6.38 ± 0.09 | 6.5 - 8.5 | 6.5 - 8.0 |
8 | Conductivity | µScm−1 | 58 - 130 | 82 ± 2.2 | 1000 | - |
9 | Total Dissolved Solids (TDS) | mgL−1 | 40 - 90 | 54 ± 1.5 | 500 | <400 |
10 | * Total-Alkalinity | mgCaCO3L−1 | 8.0 - 28.0 | 22.0 ± 0.5 | ND | 10 - 400 |
11 | * Total-Hardness | mgCaCO3L−1 | 0.93 - 23.31 | 11.51 ± 0.52 | 150 | 10 - 400 |
12 | Total-Acidity | mgCaCO3L−1 | 4.0 - 30.0 | 13 ± 0.7 | ND | - |
13 | Calcium ion (Ca2+) | mgL−1 | 0.19 - 7.57 | 3.94 ± 0.17 | ND | 4 - 160 |
15 | Magnesium ion (Mg2+) | mgL−1 | 0.11 - 1.52 | 0.40 ± 0.04 | 0.2 | <15 |
16 | Sodium ion (Na+) | mgL−1 | 5.09 - 9.34 | 6.24 ± 0.09 | 200 | 75 |
17 | Potassium ion (K+) | mgL−1 | 1.42 - 5.17 | 2.46 ± 0.11 | ND | <5 |
18 | Bicarbonate ion ( ) | mgL−1 | 9.6 - 33.6 | 26.4 ± 0.6 | ND | - |
19 | Chloride ion (Cl−1) | mgL−1 | 1.14 - 6.94 | 4.31 ± 0.13 | 250 | - |
20 | Sulphate ion ( ) | mgL−1 | 1.91 - 9.92 | 5.14 ± 0.41 | 100 | <50 |
21 | * Dissolved Oxygen (DO) | mgL−1 | 0.0 - 8.0 | 4.0 ± 0.2 | ND | 5 |
22 | Dissolved Oxygen Saturation | % | 0.0 - 105.5 | 51.0 ± 2.8 | ND | - |
23 | Biochemical Oxygen Demand (BOD5) | mgL−1 | 0.4 - 16.0 | 4.0 ± 0.3 | ND | - |
24 | Organic-Matter (OM) | mgL−1 | 2.03 - 17.23 | 7.75 ± 0.40 | 5 | - |
25 | Nitrate ion ( ) | mgL−1 | 0.55 - 4.70 | 1.17 ± 0.08 | 50 | 0 - 3 |
26 | Phosphate ( ) | mgL−1 | 0.10 - 0.56 | 0.22 ± 0.01 | ND | - |