The Carpathian region is distinguished by a high tourist flow and variety of hotels. The need for consumption of quality drinking water for tourists and local population is determined. Underground sources and wells constitute a water supply of accommodation facilities in this region. The issue of drinking water quality in the Carpathians remains poorly studied. It is necessary to realize the landscape, the content of heavy metals in the rocks, the differences in elevation, and tourist flow that can cause diffusion pollution. Sources of water supply in the tourist area of the Ukrainian Carpathians are the subject of the article. The sociological survey of the owners of local tourist accommodation facilities showed that 17.5% use surface sources, 48.8% use underground sources, 32.5% use mixed sources, 56.2% of respondents dispose of sewage disposal without proper water reclamation. We took samples of drinking water from sources, wells in this region and analyzed such indicators as pH, temperature, altitude, nitrates and nitrites, phosphates, ammonium, and mineralization. Sensafe's visual membrane tests for drinking water determined heavy metals such as Cu, Ni, Co, Zn, Cd, Hg, Fe in the water samples. The functional dependence of the content of heavy metals and the altitude zonation of drinking water sources for the region іs described by the equation y = -0.059ln(x) + 0.4219.

The aim of the article is to investigate the water quality in the Prut River, which tends to tourist destinations, and to establish the interdependence of the water pollution index with the number of tourists visited in the Yaremche Tourist Cluster. The article scientifically proves the indirect influence of tourist flow on water quality in the Prut River. Water samples from the Prut River were taken, such as pH, temperature, nitrates and nitrites, phosphates, ammonium and mineralization were analyzed. Using membrane tests Sensafe in water samples, we determined the content of the following metals: Ni, Co, Zn, Cd, Hg, Fe. Based on the results, we calculated the water pollution index, which is 0.52. It is established that the water is clean. IZV is determined at each point of water withdrawal in the dynamics during 2016-2020, the interdependence of water quality of the Prut River with the number of visitors to the tourist destination. The forecast of the index of water pollution and tourist flow for 2021-2025 is carried out using the data received in the operating system Exel. It is proved that with the growth of tourists the water quality deteriorates, although it fluctuates within the norm.