Biomedical Science Letters

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Table. 1.

Number of microorganisms isolated from the hot and cold faucets of six water purifiers in 2018 and 2019 years

Water purifiers Gram reaction Number of microorganisms /Plate
JUL 2018 SEP 2019
H C H C
A GP 32 614 0 134
GN 0 0 0 96
B GP 0 886 0 252
GN 0 1 0 251
C GP 0 385 0 0
GN 0 497 0 448
D GP 0 761 0 0
GN 0 0 0 321
E GP 12 718 0 346
GN 0 629 0 372
F GP 9 43 0 119
GN 0 525 0 0
Total 53 5,059 0 2,339
Mean 8.83 843.0 0 389.83

Abbreviations: JUL, July; SEP, September; GP, gram positive; GN, gram negative; H, hot water; C, cold water

Range and mean of temperature of cold and hot water was 5.37℃ (4~9℃) and 76℃ (70~81℃)

Biomed Sci Letters 2023;29:256-62 https://doi.org/10.15616/BSL.2023.29.4.256
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