Impact of Sugar Mill Effluent on the Quality of Groundwater …
47
i. Chloride
j. Dissolved Oxygen
k. Chemical Oxygen Demand (COD)
0
20
40
60
80
100
120
140
S1
S2
S3
S4
S5
S6
S7
S8
S9
S10
mg/l
0
50
100
150
200
250
300
S1
S2
S3
S4
S5
S6
S7
S8
S9
S10
mg/l
0
1
2
3
4
5
6
7
8
9
S1
S2
S3
S4
S5
S6
S7
S8
S9
S10
mg/l
Fig. 2 (continued)
4.4 Total Solids (TS)
Total Solids (TS) values for all the groundwater samples are recorded within the
range of 1000–2500 mg/l. The highest value of 2500 mg/l is observed at station S1
whereas the lowest value of 1000 mg/l is observed at station S7 in Fig. 2d.
4.5 Total Dissolved Solids (TDS)
The total dissolved solids in water are due to the presence of sodium, potassium,
calcium, magnesium, manganese, carbonates, bicarbonates, chlorides, phosphate,
organic matter, and other particles (Chapmanan and Kimstach 1996). The values
of the total dissolved solids for all the groundwater samples vary between 500 and
1500 mg/l. The maximum allowable limit of total dissolved solids in groundwater
for domestic purposes is 1500 mg/l (WHO). The maximum value (1500 mg/l) is
recorded at station S6 and the minimum value (500 mg/l) is recorded at station S7
as shown in Fig. 2e. According to the classification of drinking water based on TDS
values. In this study, the TDS value for all the groundwater samples is well within
the permissible limit of 1500 mg/l except the sampling station S6 (1500 mg/l).