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Table 4

Average values of some heavy metals in drinking water samples collected from different sources of Pelengana commune

Water sourcesAs (mg/L)Hg (mg/L)Cu (mg/L)Cd (mg/L)Pb (mg/L)Mn (mg/L)Fe (mg/L)Cr (mg/L)
Pélengana-Wèrè 
 Hand pump (n = 4) 0.0018 ± 0.0012 0.0033 ± 0.0024 0.21 ± 0.02 0.003 ± 0.001 0.06 ± 0.02 0.033 ± 0.003 0.26 ± 0.02 0.005 ± 0.0002 
 Borehole (n = 3) 0.0004 ± 0.0002 0.00045 ± 0.00037 0.04 ± 0.01 0.001 ± 0.0001 0.012 ± 0.01 0.016 ± 0.001 0.037 ± 0.01 0.036 ± 0.021 
 Dug well (n = 5) 0.0008 ± 0.0002 0.00039 ± 0.00021 0.15 ± 0.11 0.004 ± 0.004 0.11 ± 0.02 0.012 ± 0.002 0.14 ± 0.12 0.008 ± 0.005 
 Shallow well (n = 12) 0.0022 ± 0.0014 0.0046 ± 0.00027 0.28 ± 0.25 0.003 ± 0.002 0.14 ± 0.02 0.031 ± 0.0026 0.41 ± 0.02 0.031 ± 0.025 
Banankoro 
 Hand pump (n = 5) 0.0012 ± 0.001 0.0027 ± 0.00032 0.34 ± 0.07 0.004 ± 0.002 0.009 ± 0.002 0.029 ± 0.0024 0.20 ± 0.03 0.012 ± 0.008 
 Borehole (n = 3) 0.0005 ± 0.00018 0.00032 ± 0.0003 0.003 ± 0.003 0.0007 ± 0.0004 0.004 ± 0.001 0.0044 ± 0.0025 0.042 ± 0.018 0.0007 ± 0.0001 
 Dug well (n = 6) 0.00021 ± 0.0002 0.00025 ± 0.00022 0.005 ± 0.002 0.001 ± 0.001 0.007 ± 0.002 0.025 ± 0.0013 0.030 ± 0.02 0.007 ± 0.002 
 Shallow well (n = 17) 0.0017 ± 0.0011 0.0035 ± 0.0023 0.18 ± 0.08 0.003 ± 0.005 0.008 ± 0.02 0.028 ± 0.002 0.39 ± 0.12 0.027 ± 0.021 
Dougadougou 
 Hand pump (n = 7) 0.0010 ± 0.002 0.0017 ± 0.0008 0.005 ± 0.001 0.002 ± 0.004 0.13 ± 0.02 0.016 ± 0.0041 0.16 ± 0.11 0.008 ± 0.0022 
 Borehole (n = 3) 0.00027 ± 0.00015 0.00020 ± 0.0001 0.001 ± 0.001 0.0003 ± 0.000 0.06 ± 0.03 0.0037 ± 0.0022 0.061 ± 0.02 0.0005 ± 0.00044 
 Dug well (n = 9) 0.00021 ± 0.00017 0.00023 ± 0.00021 0.003 ± 0.001 0.0002 ± 0.0001 0.007 ± 0.001 0.0046 ± 0.0017 0.024 ± 0.021 0.006 ± 0.003 
 Shallow well (n = 23) 0.0011 ± 0.0004 0.0026 ± 0.00014 0.020 ± 0.015 0.002 ± 0.01 0.07 ± 0.04 0.033 ± 0.0088 0.45 ± 0.22 0.025 ± 0.0023 
Range 0.0001–0.0031 0.00019–0.0053 0.001–0.32 0.0001–0.005 0.002–0.21 0.0032–0.037 0.019–0.47 0.0003–0.041 
Water sourcesAs (mg/L)Hg (mg/L)Cu (mg/L)Cd (mg/L)Pb (mg/L)Mn (mg/L)Fe (mg/L)Cr (mg/L)
Pélengana-Wèrè 
 Hand pump (n = 4) 0.0018 ± 0.0012 0.0033 ± 0.0024 0.21 ± 0.02 0.003 ± 0.001 0.06 ± 0.02 0.033 ± 0.003 0.26 ± 0.02 0.005 ± 0.0002 
 Borehole (n = 3) 0.0004 ± 0.0002 0.00045 ± 0.00037 0.04 ± 0.01 0.001 ± 0.0001 0.012 ± 0.01 0.016 ± 0.001 0.037 ± 0.01 0.036 ± 0.021 
 Dug well (n = 5) 0.0008 ± 0.0002 0.00039 ± 0.00021 0.15 ± 0.11 0.004 ± 0.004 0.11 ± 0.02 0.012 ± 0.002 0.14 ± 0.12 0.008 ± 0.005 
 Shallow well (n = 12) 0.0022 ± 0.0014 0.0046 ± 0.00027 0.28 ± 0.25 0.003 ± 0.002 0.14 ± 0.02 0.031 ± 0.0026 0.41 ± 0.02 0.031 ± 0.025 
Banankoro 
 Hand pump (n = 5) 0.0012 ± 0.001 0.0027 ± 0.00032 0.34 ± 0.07 0.004 ± 0.002 0.009 ± 0.002 0.029 ± 0.0024 0.20 ± 0.03 0.012 ± 0.008 
 Borehole (n = 3) 0.0005 ± 0.00018 0.00032 ± 0.0003 0.003 ± 0.003 0.0007 ± 0.0004 0.004 ± 0.001 0.0044 ± 0.0025 0.042 ± 0.018 0.0007 ± 0.0001 
 Dug well (n = 6) 0.00021 ± 0.0002 0.00025 ± 0.00022 0.005 ± 0.002 0.001 ± 0.001 0.007 ± 0.002 0.025 ± 0.0013 0.030 ± 0.02 0.007 ± 0.002 
 Shallow well (n = 17) 0.0017 ± 0.0011 0.0035 ± 0.0023 0.18 ± 0.08 0.003 ± 0.005 0.008 ± 0.02 0.028 ± 0.002 0.39 ± 0.12 0.027 ± 0.021 
Dougadougou 
 Hand pump (n = 7) 0.0010 ± 0.002 0.0017 ± 0.0008 0.005 ± 0.001 0.002 ± 0.004 0.13 ± 0.02 0.016 ± 0.0041 0.16 ± 0.11 0.008 ± 0.0022 
 Borehole (n = 3) 0.00027 ± 0.00015 0.00020 ± 0.0001 0.001 ± 0.001 0.0003 ± 0.000 0.06 ± 0.03 0.0037 ± 0.0022 0.061 ± 0.02 0.0005 ± 0.00044 
 Dug well (n = 9) 0.00021 ± 0.00017 0.00023 ± 0.00021 0.003 ± 0.001 0.0002 ± 0.0001 0.007 ± 0.001 0.0046 ± 0.0017 0.024 ± 0.021 0.006 ± 0.003 
 Shallow well (n = 23) 0.0011 ± 0.0004 0.0026 ± 0.00014 0.020 ± 0.015 0.002 ± 0.01 0.07 ± 0.04 0.033 ± 0.0088 0.45 ± 0.22 0.025 ± 0.0023 
Range 0.0001–0.0031 0.00019–0.0053 0.001–0.32 0.0001–0.005 0.002–0.21 0.0032–0.037 0.019–0.47 0.0003–0.041 
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