Analysis on sanitary condition of water in swimming pool in Jiangbei District of Chongqing from 2020 to 2023
Objective To understand the sanitary status of swimming pool in Jiangbei district of Chongqing,and to provide scientific basis for sanitary supervision and management and improvement of swimming pool water quality.Methods On-site sampling of all publicly accessible swimming pool waters in Jiangbei District of Chongqing from 2020 to 2023 was carried out,and free residual chlorine,total bacterial colonies and coliform groups were detected and evaluated according to the"Health Indicators and Limit Requirements for Public Places"(GB 37488-2019).The qualification rate was used for descriptive analysis of each index,and the rates were compared by Chi-square test.The test level was α=0.05.SPSS 22.0 software was used for statistical analysis.Results A total of 561 samples of swimming pool water were collected and tested from 2020 to 2023 in Jiangbei District of Chongqing,with a total qualified rate of 49.38％.The qualified rate of coliform group was the highest(98.93％),followed by the total number of colonies(91.27％),and the qualified rate of free residual chlorine was the lowest(54.19％).The qualified rate of indoor swimming pool(52.82％)was higher than that of outdoor swimming pool(41.52％),and the difference was statistically significant(x2=6.072,P=0.014).The qualified rate of microbial index was different with different concentration of free residual chlorine,and the difference was statistically significant(x2=73.285,P＜0.001).Conclusions Due to the low qualification rate of swimming pool water in Jiangbei district of Chongqing from 2020 to 2023,we should focus on free residual chlorine,do a good job in publicity and popularization,and carry out effective training for operators and managers to ensure the sanitary condition of swimming pool water and safeguard life and health.
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