Parameters

N

Undredged

Mean ± SD

Dredged

Mean ± SD

LASEPA Standard

Colour

3

180.7 ± 145.5

290.3 ± 107.8

250 Pt.Co.APHA

Temperature

3

25.7 ± 1.7

25.9 ± 1.2

40

pH

3

6.7 ± 1.7

7.3 ± 1.3

5.5 - 9.0

Turbidity

3

16.9 ± 2.2

23.1 ± 0.5

FTU

Conductivity

3

70.2 ± 8.5

82.4 ± 19.0

µS/cm

Total suspended solid

3

24.0 ± 15.1

2.7 ± 3.2

100 mg/l

Total dissolved solid

3

114.7 ± 99.3

155.3 ± 49.1

2100 mg/l

Total solid

3

138.7 ± 110.4

178.0 ± 49.5

2200 mg/l

Total acidity (mg/l)

3

36.0 ± 6.1

50.3 ± 7.5

NS

Total alkalinity (mg/l)

3

86.7 ± 46.2

90.0 ± 39.1

NS

Chloride

3

29.7 ± 4.7

29.3 ± 5.9

250 mg/l

Nitrate

3

1.3 ± 0.2

0.3 ± 0.3

-

Phosphate

3

1.1 ± 0.1

1.5 ± 0.3

-

Sulphate

3

4.0 ± 1.0

4.3 ± 2.3

-

Phenol

3

0.0 ± 0.0

0.0 ± 0.0

1.0 mg/l

Oil and Grease

3

0.0 ± 0.0

0.0 ± 0.0

10.0 mg/l

Dissolved oxygen

3

5.5 ± 0.3

5.5 ± 0.5

Not Less than 2

COD

3

0.3 ± 0.6

0.0 ± 0.0

200 mg/l

BOD

3

0.1 ± 0.1

0.0 ± 0.0

50 mg/l

Iron

3

0.3 ± 0.3

0.5 ± 0.4

10.0 mg/l

Sodium

3

1.5 ± 0.4

2.4 ± 1.9

-

Potassium

3

0.4 ± 0.1

0.3 ± .0.5

200.00 mg/l

Total Plate Count

3

73.3 ± 49.2

143.3 ± 77.7

0.5 mg/l