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Table 3 Median and %WSORL of selected physicochemical parameters of well water samples

From: Physicochemical quality of drinking water sources in Ethiopia and its health impact: a retrospective study

Region

Total number of sample

Selected physicochemical parameters

PH

Total hardness mg/L as CaCO3

SiO2 (mg/L)

Na+ (mg/L)

Ca2+ (mg/L)

Mg2+ (mg/L)

Cl− (mg/L)

PO4 3− (mg/)

Addis Ababa

103

7.34

%WSORL = 12.6

154.0

%WSORL = 8.7

50.73

27.2

%WSORL = 2.9

41.68

%WSORL = 11.7

10.5

%WSORL = 0

12.0

%WSORL = 1

0.03

Afar

62

7.72

%WSORL = 6.5

182.0

%WSORL = 32.3

80.0

391.0

%WSORL = 69.4

42.49

%WSORL = 25.8

19.4

%WSORL = 16.1

130.46

%WSORL = 33.9

0.05

Amhara

30

7.38

%WSORL = 10

96.0

%WSORL = 16.7

56.12

49.3

%WSORL = 26.7

28.05

%WSORL = 16.7

6.69

%WSORL = 6.7

8.0

%WSORL = 0

0.05

Benshangul Gumuz

1

7.4

%WSORL = 0

112.0

%WSORL = 0

41.22

12.24

%WSORL = 0

30.46

%WSORL = 0

8.6

%WSORL = 0

1.0

%WSORL = 0

0.08

Dire Dawa

6

7.26

%WSORL = 16.7

590.0

%WSORL = 66.7

44.55

47.6

%WSORL = 16.7

150.3

%WSORL = 66.7

44.17

%WSORL = 33.3

137.23

%WSORL = 0

0

Harari

15

7.22

%WSORL = 0

290.0

%WSORL = 40

43.7

74.8

%WSORL = 6.7

72.14

%WSORL = 46.7

22.0

%WSORL = 6.7

39.32

%WSORL = 0

0.01

Oromia

266

7.66

%WSORL = 13.5

104.0

%WSORL = 6.4

67.27

54.5

%WSORL = 24.8

27.25

%WSORL = 7.9

8.57

%WSORL = 1.5

8.04

%WSORL = 1.5

0.08

SNNP

28

7.58

%WSORL = 14.3

84.0

%WSORL = 14.3

79.81

68.0

%WSORL = 21.4

24.05

%WSORL = 10.7

4.78

%WSORL = 0

6.45

%WSORL = 0

0.04

Somali

22

7.3

%WSORL = 0

865.0

%WSORL = 72.7

47.59

224.4

%WSORL = 59.1

160.32

%WSORL = 77.3

66.46

%WSORL = 59.1

234.93

%WSORL = 40.9

0.02

Tigray

18

7.38

%WSORL = 11.1

202.0

%WSORL = 33.3

35.0

41.65

%WSORL = 11.1

55.31

%WSORL = 38.9

15.3

%WSORL = 11.1

10.99

%WSORL = 0

0.09

ES (2001) (MPL)

–

6.5–8.5

300

–

200

75

50

250

–

  1. %WSORL percentage of water source out of recommended limit, MPL maximum permissible limit, ES Ethiopian standard