Sustainability reporting is becoming more and more widespread among companies aiming at disclosing their contribution to sustainable development and gaining legitimacy from stakeholders. This is more significant for firms operating in a public services’ context and mainly when supplying a fundamental public resource, like water utilities. While the literature on sustainability reporting in the water sector is scant, there is an increasing need to study the usefulness and quality of its sustainability disclosures to adequately inform the stakeholders about the activities of water utilities to protect this fundamental resource and general sustainable development. This article presents a novel assessment framework based on a scoring technique and an empirical analysis on the sustainability reports of Italian water utilities carried out through it. The results highlight a low level of disclosure on the sustainability indicators suggested by the main sustainability reporting guidelines (Global Reporting Initiative, (GRI), and Sustainability Accounting Standard Board, (SASB)); most companies tend to disclose only qualitative information and fail to inform about some material aspects of water management, such as water recycled, network resilience, water sources, and effluent quality. These findings indicate that sustainability reporting is mainly considered as a communication tool, rather than a performance measurement and an accountability tool, but also suggest the need for a new and international industry-specific sustainability reporting standard.

Corporate sustainability is a multifaceted concept with different definitions and measures proposed by the literature and the standards. This study aims to develop and validate a scale of corporate sustainability implementation that can face the complexity and multidimensionality of the concept. Specifically, the scale was designed around four dimensions (governance, prosperity, planet, and people), a three‐level structure, and a formative approach. The scale validation process entailed the engagement of experts, a survey of 303 Italian firms, and a case study application. The findings highlight the nature of the third‐order construct of sustainability implementation and the relevance of adding the governance dimensions to the most spread triple bottom line approach. As a theoretical contribution, this study argues that the missed recognition of these features could originate differences in previous sustainability measures. Further studies would apply the scale to measure firm sustainability in different contexts and in relationship with relevant drivers and outcomes.

Sustainability innovation is often not achievable by a single organisation; even if changes in business operations can lead to great advances towards a more sustainable business model (SBM), the effectiveness of these implementations largely depends on the combined actions of the organisation’s network of partners. The aim of this research is to analyse the way that SBMs and partnerships co-evolve to enhance the sustainability of the involved organisations and spread sustainability culture beyond the network. In doing so, this article presents a case study of the company Alisea as a business operating within a circular business model, along with its network of partnerships. The co-evolution of the business model and partnerships is led by enabling factors that characterise the underlying relationships. The role of cross-sector collaborations is demonstrated in terms of boosting the social and environmental dimensions of the circular business model, enhancing social and economic benefits within and outside the partnerships, and spreading sustainability culture in different sectors.