Ksenia Aleksandrovna Savina
Research Assistant at the Sanitary and Chemical Analysis Laboratory, Saratov national center of hygiene of the Federal state budgetary institution «Federal center for medical and preventive technologies of public health risk management» of Rospotrebnadzor, 410022, Saratov, Zarechnaya, 1a, Russia, e-mail: ivanovde1963@mail.ru, https://orcid.org/0000-0003-4878-8784
Dmitry Evgenievich Ivanov
Doctor of Biological Sciences, Нead at the Department of Environmental Hygiene, Saratov national center of hygiene of the Federal state budgetary institution «Federal center for medical and preventive technologies of public health risk management» of Rospotrebnadzor, 410022, Saratov, Zarechnaya, 1a, Russia; Professor at the Federal State Budgetary Educational Institution of Higher Education «Saratov State Law Academy, » 410056, Saratov, Volskaya, 1, Russia, e-mail: ivanovde1963@mail.ru, https://orcid.org/0000-0001-8162-9019
Anatoly Nikolayevich Mikerov
Doctor of Biological Sciences, Professor, Head of the Saratov national center of hygiene of the Federal state budgetary institution «Federal center for medical and preventive technologies of public health risk management» of Rospotrebnadzor, 410022, Saratov, Zarechnaya, 1a, Russia, e-mail: ivanovde1963@mail.ru, https://orcid.org/0000-0002-0670-7918
Vladimir Fedorovich Spirin
MD, Professor, Senior Research Officer at the Saratov national center of hygiene of the Federal state budgetary institution «Federal center for medical and preventive technologies of public health risk management» of Rospotrebnadzor, 410022, Saratov, Zarechnaya, 1a, Russia, e-mail: ivanovde1963@mail.ru, https://orcid.org/0000-0002-2987-0099
Anton Valerievich Kosarev
Candidate of Chemical Sciences, Associate Professor, Research Officer at the Laboratory of Chemical and Biological Monitoring of Water Quality, Saratov national center of hygiene of the Federal state budgetary institution «Federal center for medical and preventive technologies of public health risk management» of Rospotrebnadzor, 410022, Saratov, Zarechnaya, 1a, Russia, e-mail: ivanovde1963@mail.ru, https://orcid.org/0000-0002-6614-7297
Margarita Nikolaevna Konkova
Candidate of Medical Sciences, Senior Research Officer at the Environmental Hygiene Department, Saratov national center of hygiene of the Federal state budgetary institution «Federal center for medical and preventive technologies of public health risk management» of Rospotrebnadzor, 410022, Saratov, Zarechnaya, 1a, Russia, e-mail: ivanovde1963@mail.ru, https://orcid.org/0000-0002-3935-6499
Victor Aleksandrovich Chekmizov
Chemical engineer at the Sanitary and Chemical Analysis Laboratory, Saratov national center of hygiene of the Federal state budgetary institution «Federal center for medical and preventive technologies of public health risk management» of Rospotrebnadzor, 410022, Saratov, Zarechnaya, 1a, Russia, e-mail: ivanovde1963@mail.ru, https://orcid.org/0000-0003-2821-0723
Tatyana Sergeevna Cherkasskaya
Medical Director, Federal Budgetary Healthcare Institution «Center for Hygiene and Epidemiology in the Saratov Region», 410031, Saratov, Bolshaya Gornaya, 69, Russia, e-mail: okg@gigiena-saratov.ru, https://orcid.org/0000-0002-8610-4569
Margarita Evgenievna Minaeva
Head of the Department of Municipal Hygiene, Federal Budgetary Healthcare Institution «Center for Hygiene and Epidemiology in the Saratov Region», 410031, Saratov, Bolshaya Gornaya, 69, Russia, e-mail: okg@ gigiena-saratov.ru, https://orcid.org/0000-0002-4722-6379
Dmitry Е. Ivanov
doctor of biological Sciences, head of the water hygiene laboratory at the Saratov medical scientific center for hygiene, e-mail: ivanovde1963@mail.ru
Springs on the right Bank of the Saratov region can be considered as a predictive model of changes in the chemical composition of spring water in a warming climate. The 14 sources most demanded by the population were identified. The probable causes of the detected deviations in the investigated sanitaryhygienic indicators are also described. The research period is 2016–2019. The sources are located on the territory of the right Bank of the Saratov region, including the city of Saratov. We determined the flow rate and type of sources, the water temperature in them, the presence of captage and sanitary protection zones, the chemical composition of water in terms of smell, taste, color, turbidity, pH, total hardness, total mineralization, Cl, SO[sub]4[/sub] [sup]2[/sup]-, NO[sub]3[/sub] , NO[sub]2[/sub] , NH[sub]3[/sub] , Pb[sup]2+[/sup], Cd[sup]2+[/sup], Fe[sub]com[/sub], Mn[sub]com[/sub], Cr[sub]com[/sub], As[sub]com[/sub]. We found that 35 % of samples do not meet the requirements of sanitary standards. Deviations were detected in terms of color, turbidity, total hardness, manganese, chlorides, nitrates, and cadmium. The dynamics of changes in chemical indicators of water quality in all surveyed sources was studied. In 6 of them, from 2016 to 2019, an increase in the level of hardness and total mineralization was revealed. The highest concentrations of the studied substances were recorded in the spring period (flood). An increase in the concentration of manganese was observed in 6 sources. In one of them, in March 2017, the critical value of this indicator was recorded (22 MPC). The necessity of using springs by the population as alternative sources of water supply for drinking purposes is analyzed. To identify the demand for springs in the city of Saratov, a survey of 535 people was conducted directly at the sampling sites. The conducted survey of the population indicates the confidence of the population in the quality of spring water. The probable causes of the detected excess are described. A comparison of our results with available data from 2009–2016 indicates a deterioration in the water quality of the surveyed sources.
