Table 1: Mean concentrations of heavy metals in water samples in Maiganga village.
|
Heavy Metal |
Mean Value |
Std Deviation |
Min. Value |
Max. Value |
Acceptable |
Highest Perm. |
CPCB (for inland surface water) |
|
PH |
6.9 |
0.24 |
6.6 |
7.4 |
6.0 |
8.0 |
|
|
Pb (mg/L) |
1.75 |
0.26 |
1.35 |
2.07 |
0.01 |
NRa |
0.1 |
|
Co (mg/L) |
2.72 |
0.66 |
1.60 |
3.53 |
N/A |
N/A |
|
|
Ni (mg/L) |
2.37 |
0.51 |
1.32 |
2.83 |
0.02 |
NRa |
3 |
|
Cd (mg/L) |
0.25 |
0.063 |
0.15 |
0.31 |
0.003 |
NRa |
2 |
|
Cu (mg/L) |
0 |
0 |
0 |
0 |
0.05 |
1.5 |
3 |
|
Cr (mg/L) |
0 |
0 |
0 |
0 |
0.05 |
NRa |
2 |
N/A: Not Available; aNR: Not Relevant