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Surface waters in the Lepenc river basin have been under the influence of a large number of contamination factors of anthropogenic nature over the last two decades. Contaminations from the soil surface easily reach surface waters, modifying water quality. Today there are many methods that are used to classify surface water quality. This paper aims to demonstrate the state of surface water quality based on the water quality index (WQI). To investigate the WQI in the Lepenc river basin, data was measured in spring, summer, and autumn of 2017. According to WQI, the waters in the Lepenc river basin, including Nerodime and Lepenc rivers, vary from WQI-36 to WQI-76.

Groundwater is an important source for a drink and irrigation in the Blinaja river basin. Understanding knowledge of irrigation water quality is critical to the management of water for long-term productivity. Historically for this study area there is no data and information regarding the quality and use of water for irrigation needs. Therefore, there was a need to assess water quality based on data analysed from eight sampling points. The purpose of this paper is to evaluate, relying on analytical results, the quality of groundwater in the Blinaja river basin for the purpose of its use for irrigation of agricultural crops. For this purpose, in the Blinaja River Basin in different months during 2015, 2016, 2018 and 2019, 28 water samples were taken to assess the quality of groundwater for irrigation. Water samples were analysed in a laboratory for some of the key quality indicators; pH, EC, hardness (TH), Ca, Mg, Na, K, HCO3, SO4, Cl, etc. and then irrigation water quality indices were calculated such as: percentage of Na (% Na), SAR (Sodium Adsorption Ratio), PI (Permeability index), KR (Kelly's ratio), etc. The overall objective of this study was to assess the quality of water to be used by the inhabitants of the area for irrigation of agricultural crops. Analytical procedures for the laboratory determinations of water quality have been given in several publications (USDA Handbook 60 by Richards, 1954; FAO Soils Bulletin 10 by Dewis and Freitas1970; APHA 2005). Doi: 10.28991/cej-2021-03091740 Full Text: PDF

We used physicochemical and biological parameters to evaluate the water quality in river Nerodime in Kosovo. The research was conducted in spring 2017, in three stations along the river (upstream, middle and downstream). River Nerodime is the biggest tributary of the River Lepenci Basin that flows in South Eastern part of Kosovo. During its flow, Nerodime enters the cities of Ferizaj and Kaçaniku where it becomes a collector of many pollutants of diverse origin. Our research concluded that the river conditions are very severe in middle and downstream of the river. The values of physicochemical parameters and biotic indices indicate that the water quality in the upper flow is classified good to moderate, whereas in middle and downflow, due to the discharge of municipal wastewaters, industry and agricultural runoff, the water quality significantly decreases and is poor, respectively bad quality.