Parameters

Unit

WHO standards (2011)

Weight (wi)

Relative weight (wi)

pH

6.5 - 8.5

4

0.105

EC

µS/cm

1400

4

0.105

TSS

mg/L

25 - 40

2

0.053

Turb

NTU

5

2

0.053

Na⁺

mg/L

200

2

0.053

K⁺

mg/L

12

1

0.026

Mg²⁺

mg/L

125

2

0.053

Ca²⁺

mg/L

75

2

0.053

F⁻

mg/L

1.5

4

0.105

Cl⁻

mg/L

250

3

0.079

mg/L

50

5

0.132

mg/L

250

4

0.105

mg/L

125 - 130

3

0.079