Table 2: Physiochemical parameters of the monitoring borehole.
Year |
pH |
Ec (µS/cm) |
Sal(‰) |
Temp (℃) |
DO(mg/l) |
Water level (m) |
Jan-19 |
7.74 |
2559 |
13.99 |
30.10 |
1.70 |
1.66 |
Feb-19 |
7.70 |
2558 |
14.66 |
29.30 |
3.20 |
2.23 |
Mar-19 |
7.70 |
2546 |
14.52 |
30.00 |
2.74 |
2.18 |
Apr-19 |
7.70 |
2659 |
14.49 |
30.42 |
2.08 |
2.12 |
May-19 |
7.77 |
2872 |
16.25 |
30.38 |
1.92 |
2.07 |
Jun-19 |
7.75 |
2988 |
16.57 |
30.24 |
1.55 |
1.90 |
Jul-19 |
7.70 |
2884 |
21.18 |
29.51 |
1.98 |
1.79 |
Aug-19 |
7.66 |
2970 |
16.72 |
29.45 |
1.64 |
2.07 |
Sep-19 |
7.70 |
2990 |
16.89 |
37.11 |
2.31 |
1.97 |
Oct-19 |
7.63 |
3072 |
17.58 |
28.82 |
2.49 |
1.58 |
Nov-19 |
7.94 |
2832 |
16.41 |
29.28 |
1.60 |
1.99 |
Dec-19 |
7.85 |
2975 |
16.73 |
29.49 |
2.04 |
2.09 |
Range |
7.63-7.94 |
2546-3072 |
13.99-21.18 |
28.82-30.42 |
1.55-3.20 |
1.58-2.23 |
WHO [13] |
7-8.5 |
400-1500 |
- |
- |
- |
- |
USEPA [21] |
6.5-8.5 |
- |
0 |
Ambient/cool |
4.0 |
- |