Geomorphologic Unit/Parameters

Mangrove & Saltwater Back Swamp-Degema

Freshwater Back Swamp and Meander Belt-Tuomo

Mangrove Saltwater Back Swamp-Azama

WHO Standard

WS1

WS2

WS1

WS2

WS1

WS2

Physical/ organoleptic

Appearance

Clear

Clear

Clear

Reddish yellow

Pale yellow

Clear

Turbidity NTU

2.86

3.03

25

4.05

12

5

Odor

Unobj

Unobj

Obj

Obj

Unobj

Taste

Unobj

Unobj

Obj

Obj

Unobj

Temperature (˚C)

29.8

29.8

27.1

25-30 (Ambient)

Chemical

Conductivity uscm

51

52

40.5

155.3

92.7

792

250

pH

5.5

6

5.7

6.83

6.15

6.5-8.5

Chlorides as NaCl

11.70 mg/l

895

278

250

Total alkalinity as CaCO3

13

12

2.72

10

Total hardness

10

5

20

60

2.88

100

Mg Hardness as MgCO3 mg/l

5

33

20

Ca hardness mg/l

17

176

150

Total Iron as Fe mg/l

9.2

0.53

14.19

3.823

0.3

Nitrates NO 3

2.3

3

2.8

0.86

Nil

0.4

10

Sulphate SO 4

0.2

3

250

Phosphate

0.31

250

Total dissolved solids TDS

28.6

28.6

18

157

46.35

396

500

Total suspended solids

11

10

30

10

48

25

Salinity

4.7

3.5

26.91

250

Cu mg/l

<0.001

1

Ca mg/l

0.452

70

Mg mg/l

0.671

30

K mg/l

467

200

Na mg/l

4.6

1 128

200

Pb mg/l

0.081

0.05

Zn mg/l

1.01

0.275

3

Mn mg/l

0.163

0.5

Cd mg/l

0.683

0.003

Cr mg/l

0.464

0.05