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Table 1 Details of tested variation in presence or absence of connection water pipe, frequency of use, and time interval of pre- and post-usage water flush

From: Influence of pre- and post-usage flushing frequencies on bacterial water quality of non-touch water fittings

Fitting no.

Connection pipe length

Frequency of usage a

Mode of flushing

 
   

Pre-flushing

Post-flushing b

1

50 cm

once weekly

none

none

2

50 cm

once monthly

none

none

3

50 cm

10× daily

none

none

4

300 cm

10× daily

none

none

5

50 cm

10× daily

none

2 s

6

50 cm

10× daily

none

10 s

7

none

10× daily

none

none

8

50 cm

none

30 s

none

  1. a usage: 30 seconds at a pre-set water temperature of 37°C.
  2. b cold water at a pre-set water temperature of 18°C.