Analysis of the water quality and sanitation monitoring results of swimming pools in Haikou City from 2018 to 2022
Objective To analyze the water quality test results of swimming places in Haikou city from 2018 to 2022,to understand whether the swimming pool water quality indicators meet the standard,to provide a basis for the future supervision of the environmental sanitation of swimming pools and the guarantee for the physical and mental health of swimmers.Methods A total of 1 669 water samples from the swimming pool were collected from 2018 to 2022,the testing indexes were evaluated with reference to the Health Standard for Swimming Places and the Requirements for Health Indicators and Limits in Public Places.The SAS 9.2 statistical software was used for x2 test,with the test level α=0.05.Results From 2018 to 2022,about 1 669 water quality samples of swimming pool were collected,and the total qualified rate was 59.3％,the water quality sample and qualified rate of the swimming pool in each year were 467(62.5％),481(64.9％),459(52.5％),190(55.3％),72(54.2％),respectively.The difference between 5 years was statistically significant(x2=19.028,P=0.001).The qualified rate of coliform group and turbidity in swimming pool was 99.5％,and the qualified rate of pH value and urea was 82.6％.Except for the difference in the qualified rate of the total number of colonies,the other 5 items were statistically significant(pH x2=205.554,P＜0.001;Turbidity x2=93.008,P＜0.001;Urea x2=10.808,P=0.029;free residual chlorine x2=35.802,P＜0.001.Coli group x2=16.070,P=0.003).Total 306 samples of children's swimming pool,qualified rate of 53.8％,adult swimming pool water quality samples of 1 363,the qualified rate of 60.6％,The difference was statistically significant(x2=5.567,P=0.018).Except for the statistical difference of urea(x2=3.901,P=0.048),the qualifiication rate difference of the other 5 items was not significant.Comparing different concentrations of free residual chlorine,the difference in the qualified rate of microbial index was significant(x2=39.477,P＜0.001).Conclusions In recent 5 years,the overall qualified rate of swimming pool in Haikou is not optimistic,among the 6 indexes,the qualified rate of pH value,urea and free residual chlorine is low,the water quality and sanitation status of swimming pools should be better managed and supervised to reduce the risk of disease transmission and ensure the health of swimmers.
swimming poolwater quality monitoringpercent of passsanitary conditions
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