S. No. | Parameters/ Sampling Site | pH | Conductivity (m·S/cm) | TDS (mg/l) | DO (mg/l) | Hardness (mg/l) |
1 | Keamari | 6.9 ± 0.23 | 0.12 ± 0.01 | 96.2 ± 2.03 | 7.2 ± 0.08 | 62 ± 0.90 |
2 | SITE | 6.3 ± 0.21 | 0.15 ± 0.03 | 82.3 ± 3.68 | 6.9 ± 0.09 | 69 ± 2.31 |
3 | Baldia | 6.5 ± 0.19 | 0.09 ± 0.01 | 72.0 ± 6.23 | 7.1 ± 0.01 | 60 ± 3.21 |
4 | Orangi | 6.8 ± 0.25 | 0.13 ± 0.03 | 89.0 ± 4.02 | 6.9 ± 1.02 | 73 ± 2.11 |
5 | Lyari | 6.9 ± 0.17 | 0.08 ± 0.05 | 125 ± 5.99 | 6.9 ± 0.08 | 70 ± 0.98 |
6 | Saddar | 6.2 ± 0.26 | 0.09 ± 0.02 | 115 ± 1.03 | 7.3 ± 0.05 | 62 ± 0.05 |
7 | Jamshed | 7.1 ± 0.11 | 0.16 ± 0.01 | 126 ± 2.58 | 6.9 ± 0.11 | 89 ± 0.12 |
8 | Gulshan | 6.9 ± 0.28 | 0.14 ± 0.03 | 105 ± 9.25 | 7.8 ± 0.09 | 69 ± 0.14 |
9 | Shah Faisal | 7.2 ± 0.20 | 0.05 ± 0.01 | 101 ± 6.25 | 7.5 ± 0.08 | 49 ± 0.10 |
10 | Landhi | 6.9 ± 0.11 | 0.16 ± 0.04 | 159 ± 3.02 | 7.3 ± 0.21 | 72 ± 0.18 |
11 | Korangi | 7.9 ± 0.24 | 0.21 ± 0.03 | 152 ± 2.05 | 6.9 ± 0.71 | 63 ± 1.32 |
12 | North Nazimabad | 6.7 ± 0.09 | 0.05 ± 0.01 | 32.0 ± 2.03 | 6.8 ± 0.22 | 32 ± 0.19 |
13 | New Karachi | 6.5 ± 0.18 | 0.02 ± 0.02 | 67.0 ± 8.52 | 7.3 ± 0.25 | 63 ± 0.17 |
14 | Gulberg | 7.6 ± 0.19 | 0.11 ± 0.01 | 96.0 ± 5.20 | 7.9 ± 0.21 | 49 ± 3.59 |
15 | Liaquatabad | 7.2 ± 0.09 | 0.07 ± 0.03 | 79.3 ± 5.02 | 8.2 ± 0.18 | 58 ± 2.30 |
16 | Malir | 6.5 ± 0.15 | 0.08 ± 0.04 | 75.3 ± 3.02 | 7.1 ± 0.95 | 49 ± 2.36 |
17 | Binqasim | 6.2 ± 0.02 | 0.05 ± 0.01 | 59.0 ± 2.01 | 6.3 ± 0.08 | 23 ± 5.23 |
18 | Gadap | 7.0 ± 0.01 | 0.04 ± 0.02 | 99.0 ± 6.30 | 7.8 ± 0.02 | 71 ± 1.29 |
WHO Standard | 6.5 - 8.5 | No limit listed | 500 | No limit listed | 0 - 75 |