The agrochemical state of sod-podzolic soils of thе Western Polissya is analysed area of next agro-industrial groups: 27b-sod-podzolic gley-dried clay-sandy, 14b-sod-podzolic and podzolic-sod gley clay-sandy soils; 5b-sod-podzolic and non-glued and gleyy clay-sandy soils on sandy sediments. The content of humus, alkaline hydrolyzed nitrogen, mobile phosphorus and exchangeable potassium in sod-podzolic soils on arable land, under pasture and hayfields has been investigated. Determination of agrochemical indexes of soils, conducted in the laboratory of analytical support of agrochemical and agro-ecological research and quality of products Rivne branch of the state institution "Institute of Soil Protection of Ukraine". As a result, a low and medium degree of land provision was found for the studied parameters (with the exception of mobile forms of phosphorus in the agricultural group 14b under grass) irrespective of their agricultural use. In terms of humus content, agricultural production groups 14b and 5b under haymasters have an average degree of provision (2,1-2,2%), 27b for arable land and 5b for pasture-low; on the content of alkali hydrolyzed nitrogen-very low (< 101 mg/kg); on maintenance the movable forms of phosphorus themiddle is educed (51-100 mg/kg); with the content of mobile potassium, the agricultural production group 5b has a medium the degree of availability (84 mg/kg), other study groups-very low (< 41 mg/kg of soil). From depth, the content of all studied parameters decreases. Studying the dynamics of these indexes during 2011-2015 it is not set substantial differences in the process of the protracted cultivating, only on plough-land of the use of sederal cultures in 2014-2015 assisted the insignificant improvement of content of humus and other agrochemical indexes. Analysing agrochemical properties it is necessary to mark expediency of their improvement by application of the organo-mineral system of fertilizer in connected with the periodic liming, and also the use of the sederal sowing with the aim of passing to the conduct of organic agriculture.

The study deals with the evaluation of drinking water quality in rural settlements of Hoshcha (Rivne) district of Rivne region. It has been analyzed the concentration of biogenic (copper, zinc) and nonbiogenic (plumbum, cadmium) heavy metals in the water of the wells in the villages of Sadove, Zhalianka, Yuchyn and Tuchyn and artesian wells in the village of Tuchyn during 2012–2018. The research has given fundamental sources of underground waters pollution with heavy metals. It has been revealed that in the water of the wells Cu and Zn concentration does not increase maximum permissible concentrations during the whole period of research. The study demonstrates that water quality of the wells springs is not appropriate to the standard indicators according to the plumbum and cadmium. The authors point out the increasing of maximum permissible Pb concentrations in the wells of the villages of Sadove by 1.02–1.37 times (2012–2014, 2016, 2018) and the village of Tuchyn by 1.17–2.07 times (2012–2018). It has been stated that Cd concentration increases maximum permissible concentration in the wells of the villages of Sadove (by 1.6–3.8 times), Zhalianka (by 1.8–2.5 times), Yuchyn (by 1.3–2.7 times) and Tuchyn (by 1.8–4.5 times). Under the conditions of optimal concentrations biogenic heavy metals are necessary to provide life activities and functions of physiological processes of all organisms. However, continuous consuming of drinking water that is polluted with heavy metals negatively impacts on the organism and may cause acute and chronic diseases. Their impact depends on the concentration of the element, characteristics and intensity of its getting, absorption speed, retention and removal speed, and also human’s general state of health. In the village of Tuchyn according to cuprum, zinc, plumbum and cadmium concentration the water of artesian wells is appropriate to the permissible standards during 2012–2018 and is suitable for consumption and use. It is obviously that the use of deeper underground water horizons provides the inhabitants of the village of Tuchyn with qualitative drinking water. In the water of settlements wells where the increasing of standard Cd and Pb concentrations was observed it should be developed and implemented effective measures to develop the water quality.