This article describes the role and importance of the water sector in regional infrastructure for guaranteeing the viability of social-economic environment of the region. It substantiates the composition of water sector elements, their interconnection, problems of development in the modern conditions of limited financing of infrastructure objects. The article gives reasons for the necessity of using the concession in order to additionally attract private investors’ funds to realize infrastructural projects. It creates the guidelines of concession mechanism improvement including the usage of infrastructure bonds, improvement of the checklist of indicators included in the investment agreements for the concedent and concessionaire. The article offers the list of criteria for selecting the priority projects in the field of regional infrastructure.

Keywords: Regional infrastructure, water sector, concession, infrastructure bonds, investment project, concedent, concessionaire, indicators of concession agreements.