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Hygiene assessment of the spring water quality based on a risk-oriented approach

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K.A. Savina, D.E. Ivanov, A.V. Kosarev, A.V. Shorina, Yu.A. Pankratova

Section: Methodology and research methods. Models and forecasts

The work considers the safety of the use of springs in the Saratov region as alternative sources of water supply. The objects of the study were 31 springs. Due to the increased anthropogenic load, special attention was paid to 11 springs in the city of Saratov. Studies were conducted during 2018 for 25 chemical indicators, according to Sanitary Regulation SanPiN 1.2.3685-21. The water quality of 65% of the springs surveyed by chemical indicators corresponds to sanitary standards, 35% of the springs studied exceed the MAC at least one indicator, the percentage of samples with excesses on several indicators was 23. Most often, the excess of the established standards is noted for the sanitary and chemical indicators of arid territories: total hardness (31%), the content of manganese (31%), nitrates (23%), total iron (8%). According to the contribution to the risk of olfactory-reflex effects, the priority pollutants of the springs of the Saratov region can be arranged in descending order: manganese, hardness, chlorides, nitrates, iron. Spring water pollution in the Saratov region is associated with the interaction of stratal waters with sedimentary rocks of aquifers, as well as agricultural activities.

Keywords: springs, sanitary and chemical indicators of water quality, organoleptic risk, manganese, iron, nitrates

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Article published in number 1 for 2022
DOI: 10.25750/1995-4301-2022-1-050-055