Issues such as climate change, water scarcity, population growth, and distribution losses have stimulated the use of new technologies to manage water resources. This is how the concept of smart water management emerged as a subcategory of the concept of smart cities. This article aimed first to identify the applications of smart water-management systems described in academic articles either as applications in development or as applications already implemented or as future trends; and, second, to classify them according to the processes in the value chain of public water supply services. To this end, a systematic review of the literature was carried out, in which 100 mentions of applications were identified in 62 selected articles; then, the mentions were grouped into 10 categories. The most frequent application categories were smart meters, implementation models and architectures, and loss management. Among the processes of the value chain, applications in processes of distribution and water use were highly predominant. The lack of detail about the integration between the different applications for a smart water-management system was pointed out as a limitation and an opportunity for future research development, especially in terms of a technological roadmap study based on the relationship between smart meters and loss management.

The concept of smart water management (SWM) encompasses a series of technologies and systems whose objective is to deliver a sustainable, efficient and quality water supply service for customers. However, it is necessary to deepen the discussion about how this diversity of applications can be integrated into an architecture. This article aimed to identify the basic structure of integration models for smart water management systems (SWMS). For this, a systematic literature review was carried out in the Web of Science and Scopus databases, resulting in 20 integration models selected for final analysis and having their characteristics detailed in the results section. The main findings of this article were the similarities of the models studied with the functional model proposed by ISA-95; which can be categorized into the layers field devices, middleware and applications and adding the cross-cutting security and management. However, the detailing and systematization of the information flow in a SWMS model represents an opportunity for future research, as well as the inclusion of aspects related to sewage and rainwater in the integration models to complete the concept of the natural water cycle.