Sustainability Report 2021

SUMMARY Presentation Message from Management The Águas do Brasil Group Integrity and Transparency Fostering Universal Access to Sanitation Water Security and Climate Change Efficient Water Cycle Our Utility Companies About this Report GRI Summary Corporate Information Communication and engagement 102-40 | 102-43 | 102-44 Establishing a relationship of trust and proximity with society, especially the population it serves, is essential to the Águas do Brasil Group. The main objec- tive is to offer transparency and solve issues quickly, providing a personal- ized service capable of accelerating the response to requests, both in face-to-face and digital relationships. The main stakeholders identified are customers, employees, suppliers, granting authorities, regulators, investors and shareholders, top management, and non-governmental organizations (NGOs). Engagement with stakeholders is carried out mainly through service channels, internal and external media, satisfaction surveys, organizational climate surveys, the Conexão Ética program, intranet, and codes of Ethical Conduct and Third-Party Conduct, as well as in meetings held with different institutional audiences. To prepare this report, a materiality matrix was also prepared (see About this report) for more information. 2021 Interactions marketing/ 74 endomarketing campaigns marketing 591 e-mails sent Social networks in 2021 in 3,746 citations in the press articles 248 published on the institutional website 100% of employees on the intranet 6,797 likes and 472 comments http://www.linkedin.com/company/grupo-aguas-do-brasil O https://www.instagram.com/grupoaguasdobrasil/ f https://www.facebook.com/grupoaguasdobrasiloficial/ • Relationship channels 0800 phone numbers Águas Customer Application WhatsApp Business Group Website Chat (site and application) ⚫ Facebook, Instagram, and LinkedIn • • Compliance Program • Contact us • In-person assistance Internal Media Conexão Águas Digital ⚫ E-mail marketing • • • • • • Indoor TV ⚫ Posters ⚫ Banners Conexão Águas Informa (printed) . • Wallpaper • Águas Comunica (Teams channel) External Media Website • SMS • E-mail marketing • Mailing Newspapers Magazines Online Portals • Folders • Account space TV . Radio Banners in stores Outdoors ⚫ Sound Cars ⚫ WhatsApp Sustainability Report 2021 33

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