Table 2 Results of the water analysis of the two water varieties.

From: A randomized, double-blind water taste test to evaluate the equivalence of taste between tap water and filtered water in the Taipei metropolis

Sampling date

2018/02/26

2018/03/05

2018/03/12

2018/03/19

Sample name

Tap water

Filtered water

Tap water

Filtered water

Tap water

Filtered water

Tap water

Filtered water

Total residual chlorine (mg/L)

0.35

 < 0.011

0.27

 < 0.011

0.36

 < 0.011

0.39

 < 0.011

pH

7.4

9.4

7.4

7.9

7.4

8.5

7.3

8.4

Turbidity (NTU)

0.25

0.20

0.10

0.10

0.10

0.15

0.05

0.20

Total dissolved solids (mg/L)

62

71

62

66

71

63

64

72

  1. Test method: Total residual chlorine, Spectrophotometry (MDL = 0.011 mg/L); pH, Electrode method; Turbidity, Nephelometry; Total dissolved solids, DS meters.
Back to article page