Socio-economic and ecological stability of an urban area is closely related to environmental management. The best way to determine the urban environment is the quality rating system. The research aimed to determine indicators of urban development quality and their weight coefficient using the analytic hierarchy process (AHP) method. The study reveals five main groups of indicators where safety and ecology of the urban environment has the biggest influence on the quality of urban development.

The study focuses on analyzing the products of water filter manufacturers using marketing tools. In the course of the study, factorial, cluster, regression analysis, as well as multivariate scaling were used. As a result, it was revealed that 65% of buyers rely on 4 main factors when buying filter products: price-value ratio, assortment depth, assortment saturation, and advertising support.