HYGIENIC EVALUATION OF LONG-TERM DYNAMICS OF POST TREATED DRINKING WATER DAILY CONSUMPTION INDICATORS BY ADOLESCENT POPULATION IN VLADIVOSTOK

Abstract

Introduction: Domestic water filter systems for tap water post-treatment have been actively used by the population of many countries of the world in recent years. It is known that, according to their technical design, such domestic filters simultaneously remove harmful chemicals and biogenic chemical elements useful for the human body (Ca, Mg, etc.) from water. The use of individual post-treatment water systems can have an adverse effect on human health in areas of the deficient biogeochemical province. Purpose: Hygienic assessment of the long-term dynamics of the daily consumption of post treated drinking tap water in Vladivostok on the example of the adolescent population. Methods: A prospective research was performed, which included 4 separate follow-up periods - February of 2012, 2015, 2017 and 2021. The adolescent population of Vladivostok aged 14-17 was investigated. 667 adolescents were examined by interviewing using a specially designed questionnaire. The volume of daily consumption and the frequency of consumption per week of three types of water (tap drinking water, post treated drinking water on individual filters, bottled drinking and mineral water) were recorded. The number of adolescents who do not consume tap drinking water that has been post treated on household devices was taken into account separately. Statistical processing of the received materials was carried out using the "Data Analysis" package in Microsoft Excel 2019. Results: It has been established that, the share of post treated drinking water in the structure of daily drinking water consumption of Vladivostok adolescent population was 7.6-15.8% over the years of observation. At the same time, the consumption of post treated water increased 4 times among boys and almost 2.5 times among girls (p0.001), and the rate of occurrence (per 100 persons) of boys and girls who do not consume post treated tap water decreased by almost two times (p 0.001). Conclusions: A pronounced long-term increase in the use of household filters for the post-treatment of physiologically inferior, low-mineralized tap drinking water should be recognized as a population risk factor for a possible deterioration in the health status of the adolescent population in the conditions of the city of Vladivostok, located in the zone of a deficient biogeochemical province.