| |
mg/L
|
μg/L
|
mg/L
|
μs/cm
|
|---|
|
Well type
|
Na
|
K
|
Ca
|
Mg
|
Ba
|
Sr
|
Hardness
|
Condutivity
|
|---|
|
Abandoned wells in Sripura (n = 18)
|
|
Mean
|
74.8
|
0.9
|
51.8
|
28.0
|
150.7
|
572.4
|
243.6
|
877.2
|
|
Median
|
57.1
|
0.8
|
53.2
|
29.6
|
142.3
|
519.0
|
234.5
|
623.0
|
|
Serving wells in Sripura (n = 16)
|
|
Mean
|
51.9
|
0.6
|
29.0
|
13.0
|
89.4
|
269.1
|
125.9
|
465.0
|
|
Median
|
38.6
|
0.7
|
28.5
|
11.6
|
83.9
|
265.0
|
121.0
|
509.5
|
|
U
|
77.5
|
97.0
|
26.5
|
24.5
|
64.0
|
31.0
|
6.0
|
44.0
|
|
Z#
|
−2.295
|
−1.629
|
−4.054
|
−4.124
|
−2.760
|
−3.899
|
−4.762
|
−3.450
|
|
P Value
|
.0217*
|
.1034
|
.0001**
|
.0000**
|
0.0058**
|
.0001**
|
.0000**
|
.0006**
|
|
Surface water
|
5.85
|
0.45
|
10.6
|
1.15
|
10.4
|
46
|
31.2
|
79.5
|
|
RO water
|
3.1
|
0.2
|
0.6
|
0.6
|
2.1
|
4.6
|
4.0
|
22.0
|
|
Colombo well
|
2.6
|
0.7
|
6.8
|
0.8
|
16.4
|
13.1
|
20.2
|
49
|
|
Colombo main
|
2.5
|
0.7
|
6.8
|
0.8
|
16.5
|
14.5
|
20.0
|
49
|
- *P < 0.05, **P < 0.01, # two sample Wilcoxan rank-sum (Mann–Whitney) test.
