(a)

Bepanda

Logpom

Ndogpassi

Ndogbong

WHO (2004) limit

pH

3.5 - 6.9

4.5 - 6.09

4.08 - 5.8

4.34 - 7.2

6.5 - 8.5

EC (µS/cm)

332 - 1646

42 - 250.8

25.5 - 126

103 - 483

750

Ca (mg/l)

14.6 - 76.2

1.26 - 19.76

1.3 -18.9

2.2 - 101.6

75

Mg (mg/l)

1.3 - 25.3

0.54 - 15.84

0.3 - 1.1

0.5 - 3.31

30

Na (mg/l)

32.2 - 170.9

2.7 - 20.6

2.0 - 16.24

8.1 - 38.5

200

K (mg/l)

2.2 - 33.5

0.1 - 6.9

0.3 - 6.1

2.7 - 28.9

100

Cl (mg/l)

33.6 - 162

0.1 - 1.8

1.8 - 13.8

2.3 - 21.5

250

NO3 (mg/l)

72 - 241.1

0.6 - 27

0.6 - 40.9

16.6 - 165.1

50

SO4 (mg/l)

0 - 62.6

1 - 58

0 - 14.8

0 - 29.3

250

HCO3 (mg/l)

0 - 244

15.25 - 119.15

0 - 63.25

6.1 - 284.3

200

(b)

Bepanda

Logpom

Ndogpassi

Ndogbong

WHO (2004) limit

pH

92.3

100

85.7

6.5 - 8.5

EC (µS/cm)

38.5

0.0

0.0

0.0

750

Ca (mg/l)

7.7

0.0

0.0

9.5

75

Mg (mg/l)

0.0

0.0

0.0

0.0

30

Na (mg/l)

0.0

0.0

0.0

0.0

200

K (mg/l)

0.0

0.0

0.0

0.0

100

Cl (mg/l)

0.0

0.0

0.0

0.0

250

NO3 (mg/l)

100

0.0

10

47.6

50

SO4 (mg/l)

0.0

0.0

0.0

0.0

250

HCO3 (mg/l)

7.7

0.0

0.0

9.5

200