| |
Abandoned wells
|
Serving wells
|
U
|
Z#
|
P value
|
Surface water
|
Ro water
|
Colombo well
|
Colombo tap
|
|---|
|
Mean
|
Median
|
Mean
|
Median
|
|---|
|
Al
|
2.2
|
1.0
|
2.9
|
2.2
|
117.5
|
−0.916
|
0.3596
|
3.5
|
<0.1
|
6.7
|
71.6
|
|
Sb
|
3.2
|
0.9
|
4.5
|
2.9
|
127.0
|
−0.587
|
0.5570
|
3.4
|
0.1
|
0.3
|
0.5
|
|
As
|
0.8
|
0.4
|
0.3
|
0.3
|
104.5
|
−1.381
|
0.1674
|
0.2
|
0.2
|
<0.5
|
<0.1
|
|
Cd
|
0.04
|
0.0
|
0.04
|
0.0
|
138.0
|
−0.247
|
0.8051
|
0.1
|
0.1
|
0.1
|
0.1
|
|
Cr
|
1.0
|
0.6
|
0.5
|
0.0
|
103.0
|
−1.495
|
0.1348
|
0.3
|
0.4
|
<0.1
|
<0.1
|
|
Co
|
0.07
|
0.1
|
0.2
|
0.1
|
118.0
|
−0.968
|
0.3329
|
0.1
|
<0.1
|
0.1
|
0.2
|
|
Cu
|
1.4
|
1.2
|
1.9
|
1.0
|
107.5
|
−1.264
|
0.2063
|
0.4
|
3.5
|
0.3
|
0.4
|
|
Fe
|
90.5
|
76.6
|
45.2
|
40
|
60.0
|
−2.898
|
0.0038**
|
20.0
|
1.5
|
17.4
|
26.1
|
|
Pb
|
0.5
|
0.1
|
0.2
|
0.1
|
124.0
|
−0.791
|
0.4287
|
0.1
|
0.2
|
0.1
|
0.1
|
|
Mn
|
2.8
|
1.1
|
2.0
|
0.3
|
98.5
|
−1.573
|
0.1156
|
0.8
|
0.4
|
5.5
|
6.4
|
|
Mo
|
1.5
|
1.4
|
1.1
|
0.8
|
97.5
|
−1.609
|
0.1077
|
0.3
|
1.0
|
0.3
|
0.4
|
|
Ni
|
0.8
|
0.7
|
3.1
|
0.6
|
140.0
|
−0.139
|
0.8897
|
0.3
|
0.8
|
0.1
|
0.2
|
|
Se
|
0.7
|
0.7
|
0.3
|
0.2
|
65.5
|
−2.731
|
0.0063**
|
0.4
|
0.3
|
<0.1
|
<0.1
|
|
Ag
|
0.01
|
0.0
|
0.02
|
0.0
|
133.5
|
−0.736
|
0.4615
|
<0.1
|
0.1
|
<0.1
|
0.1
|
|
Tl
|
0.1
|
0.1
|
0.05
|
0.0
|
129.0
|
−0.582
|
0.5603
|
0.1
|
0.1
|
<0.1
|
<0.1
|
|
Sn
|
0.3
|
0.3
|
0.3
|
0.3
|
143.0
|
−0.038
|
0.9696
|
0.3
|
0.2
|
0.3
|
0.3
|
|
Ti
|
0.8
|
0.8
|
0.6
|
0.7
|
85.5
|
−2.047
|
0.0406*
|
0.2
|
0.3
|
0.3
|
0.3
|
|
V
|
14.4
|
10.5
|
17.4
|
6.3
|
84.5
|
−2.053
|
0.0400*
|
1.4
|
0.8
|
0.3
|
0.3
|
|
Zn
|
4.3
|
2.3
|
7.7
|
3.4
|
115.0
|
−1.001
|
0.3168
|
6.8
|
6.1
|
0.8
|
0.7
|
|
Gly+
|
3.5
|
3.2
|
0.7
|
0.6
|
15.0
|
−4.456
|
0.0000**
|
0.05
|
ND
|
ND
|
ND
|
- *P < 0.05, **P < 0.01, # two sample Wilcoxan rank-sum (Mann–Whitney) test, + Glyphosate.
