Public infrastructure is still lacking a unified and complete methodology for assessing strategies and actions towards sustainability that take into consideration urban complexity. There is a need for tools and frameworks that facilitate the decision making and identification of strategies, for actions that fulfill sustainable supply and demand of public infrastructure systems, without losing sight of their uniqueness. One of the most relevant approaches towards sustainability of public infrastructure is the shift of its consumption models from linear to circular based. Sis.Ter® proposes a tool called Circunet for supporting and evaluating this shift. This thesis work evaluates the efficacy of Circunet for achieving this intended matter; it demonstrates the importance of a systemic design vision as a methodological tool for the evaluation and support of the transition of public infrastructure towards circular economy models.