Amarsul was awarded the ERSAR 2025 Quality Seal - Urban Waste Management, a recognition granted by the Water and Waste Services Regulatory Authority (ERSAR) to management entities that demonstrate high quality standards in the provision of their services.

This distinction results from a rigorous evaluation process that analyzes various performance indicators, promoting the protection of users' interests, safeguarding public health and the environment, as well as the sustainability of the service.

For Amarsul, this recognition reflects the work, dedication, and commitment of the entire team in promoting increasingly efficient and sustainable waste management, reinforcing the responsibility to continue improving the services provided to communities.

The seal was awarded on March 6, 2026, at the Pavilhão do Conhecimento (Knowledge Pavilion) in Lisbon, as part of the March Conferences promoted by ERSAR.