Assessment of Water Quality from Uncentralized Water Supply Sources in Rural Areas of the Amur Region
- DOI
- 10.5922/vestniknat-2026-2-8
- Pages
- 119-128
Abstract
The Amur Region is a major agricultural area of the Russian Far East with a high rural population density. In most cases, water from decentralized sources is used for drinking, household, and domestic purposes. The scientific literature lacks data on the current state of groundwater in the most intensively exploited part of the region, the Amur–Zeya Plain. The quality of drinking water from decentralized water supply sources in the agricultural districts (Tambovsky, Konstantinovsky, and Arkharinsky) of the Amur Region was assessed. Water samples were collected in accordance with GOST R 59024-2020 during the period from March to May 2025. The depth of the wells ranged from 90 to 250 m. The investigated sources were deep tubular wells used for individual purposes. The study of groundwater composition was carried out in the environmental chemistry laboratory of Благовещенский State Pedagogical University using the capillary electrophoresis method with the “Kapel 205” capillary electrophoresis system; cation composition was determined according to FERD 14.1:2:4.167-2000 (Federal Environmental Regulatory Documents), anion composition according to FERD 14.1:2:3:4.282-18, and pH according to RD 52.24.495-2017. The obtained results were compared with SanPiN 1.2.3685-21 standards. In the water of the settlements of Kuropatino and Arkhara, MPC exceedances for nitrites were identified, while water from Lozovoye and Kuropatino showed exceedances for lithium and potassium, respectively. Water samples from the settlements of Kositsino and Otvazhnoye contained elevated concentrations of nitrite ions and barium ions. Water collected from wells in Novopetrovka contained high concentrations of lithium and barium cations. Water from decentralized water supply sources in the village of Sadovoye did not comply with standards for six indicators. Exceedances were identified for nitrite and nitrate ions, fluorine, potassium, phosphates, and barium. In general, it should be noted that elevated concentrations of barium cations and nitrite ions were identified in the Tambovsky, Konstantinovsky, and Arkharinsky municipal districts.