Table 5.130
Assessment results of individual pollution indexes of groundwater in low
flow period
Test item
Unit
4# Background
monitoring
well
1#
2#
6#
7#
Monitored
value
Pollution
index
Monitored
value
Pollution
index
Monitored
value
Pollution
index
Monitored
value
Pollution
index
Sulfate
mg/L
35.4
139
3.93
85.2
2.41
235
6.64
47.4
1.34
Calcium
mg/L
62.1
97.7
1.57
115
1.85
223
3.59
65.2
1.05
Magnesium
mg/L
19.6
40.3
2.06
52.7
2.69
82.3
4.20
22.4
1.14
Potassium
mg/L
1.22
2.83
2.32
0.886
0.73
4.8
3.93
1.63
1.34
Sodium
mg/L
4.05
99.9
24.67
11.5
2.84
97
23.95
2.49
0.61
Chloride
mg/L
10.2
278
27.25
125
12.25
120
11.76
255
25.00
Alkalinity
mg/L
222
272
1.23
360
1.62
437
1.97
295
1.33
Suspended matter
mg/L
<4
<4
0.00
<4
0.00
<4
0.00
<4
0.00
Chemical oxygen
demand
mg/L
<10
20.1
2.01
<10
0.00
82.4
8.24
<10
0.00
Dissolved oxygen mg/L
7.03
5.25
0.75
4.31
0.61
3.36
0.48
1.81
0.26
Conductivity
lscm
−1
403
1880
4.67
1246
3.09
2482
6.16
654
1.62
Water temperature °C
14.7
14.1
0.96
15.2
1.03
11.8
0.80
15.8
1.07
Chroma
Degrees <5
<5
0.00
<5
0.00
<5
0.00
<5
0.00
Turbidity
NTU
<1
<1
0.00
<1
0.00
<1
0.00
<1
0.00
Total hardness
mg/L
263
442
1.68
559
2.13
939
3.57
394
1.50
Total dissolved
solid
mg/L
396
919
2.32
862
2.18
1.92
 103 4.85
478
1.21
Permanganate
index
mg/L
1.6
2.97
1.86
1.78
1.11
10.7
6.69
2.35
1.47
Nitrate nitrogen
mg/L
4.13
4.56
1.10
6.71
1.62
6.88
1.67
0.692
0.17
Nitrite nitrogen
mg/L
0.002
0.03
15.00
0.001
0.50
0.004
2.00
0.606
303.00
(continued)
382
5 Application Cases