This article is devoted to the impact of the urbanized area of Naryn city on the water quality of the Naryn River. The studied river, which is 807 km long, serves as the main tributary of the Syr-Darya River and responds a key water artery of Central Asia. To assess the influence of anthropogenic activities, data on the chemical composition of surface water were collected from three monitoring stations over a five-year period (2019–2023). The results reveal significant variations in the concentration of cations, anions and heavy metals along the river’s course throw the city. The cation concentration indicates the predominant role of calcium ions (Ca2+), which is primarily due to their influx into aquatic systems as a result of the weathering of calcium-bearing rocks. Elevated concentrations of Ca2+ and Mg2+ observed at the second and third monitoring stations may indicate a potential influence of urban runoff and domestic wastewater on water quality. These finding highlight the need for improved wastewater management and сcontinuous water quality monitoring to preserve this critical freshwater resource. Furthermore, the study emphasizes the importance of implementing environmental protection measures to mitigate pollution risks and ensure sustainable water use in the region.
Degembaeva et al. (Mon,) studied this question.