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The status of microbiological contamination of water using to produce bottled drinking water in Khanh Hoa province in 2022

Nguyen Thi Ngoc Duyen Le Quoc Phong Tran Thi Thuy Nga Dao Thi Van Khanh Phan Thi Hoai Trinh Do Thai Hung
Received: 31 Mar 2023
Revised: 31 Mar 2023
Accepted: 31 Mar 2023
Published: 31 Mar 2023

Article Details

How to Cite
Nguyen Thi Ngoc Duyen, Le Quoc Phong, Tran Thi Thuy Nga, Dao Thi Van Khanh, Phan Thi Hoai Trinh, Do Thai Hung. "The status of microbiological contamination of water using to produce bottled drinking water in Khanh Hoa province in 2022". Vietnam Journal of Food Control. vol. 6, no. 1, pp. 100-106, 2023
PP
100-106
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553

Main Article Content

Abstract

Ninety-three samples of source water, used to produce bottled drinking water at bottled drinking water producers in Khanh Hoa province in 2022, were examined for microbiological criteria such as coliform, Escherichia coli, Pseudomonas aeruginosa, and HPC (Heterotrophic Plate Count). Results indicated that 19/93 (20.4%) of samples did not meet the microbiological requirements according to QCVN 01-1:2018/BYT. In which, the percentage of microbiological unsatisfactory well water (42.9%, 6/14) was higher than that of tap water (16.5%, 13/79). The proportion of source water samples of bottled drinking water facilities that did not meet the microbiological requirements in Cam Lam district (83.3%) was higher than those of Cam Ranh (33.3%), Dien Khanh (30%), Ninh Hoa (13.6%), Nha Trang (8%), and Van Ninh (7.7%). Unsatisfactory microbiological criteria included coliform (16.1%), P. aeruginosa (15.1%), and E. coli (1.1%). In addition, there were 8/93 (8.6%) samples with HPC higher than the recommended limit (500 CFU/mL) of the Environmental Protection Agency (EPA). The means of HPC, coliform, and P. aeruginosa were 4,2 × 102, 6,2 × 101, and 1,1 × 102 CFU/100 mL, respectively. Contaminated source water is one of the risks of microbiological contamination in finished bottled drinking water. Therefore, bottled drinking water producers in Khanh Hoa need to maintain good infection control and minimize the risk of microbial contamination from source water to finished bottled drinking water.

Keywords:

Source water, bottled drinking water, microbiological contamination, Khanh Hoa.

References

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